Thirtyeight

This article deals with the number 38. For the year 38 AD, see 38 .

The thirty-eight (38) is the natural number between thirty -seven and thirty-nine. She is straight .

Thirtyeight
38
presentation
Roman	XXXVIII
dual	10 0110
Octal	46
Duodecimal	32
Hexadecimal	26th
Morse code	· · · - - - - · ·
Mathematical properties
sign	positive
parity	straight
Factorization	2 * 19
Divider	1, 2, 19, 38

mathematics

38 is the sum of the first three prime squares ( ). Also, the sixteenth is the faculty prime . Also, thirty-eight is a nontotient ; H. there is no such that . Additionally, thirty-seven and thirty-eight is the first pair of consecutive natural numbers that are not divisible by any of their digits . Also, 38 is the largest even number that cannot be represented as the sum of two odd composite numbers . In addition, it can be trivially recognized that 38 is the sum of each row of a magic hexagon of the third degree. ${\displaystyle 2^{2}+3^{2}+5^{2}=38}$ ${\displaystyle 38!-1=523.022.617.466.601.111.760.007.224.100.074.291.199.999.999}$ ${\displaystyle x\in \mathbb {N} }$ ${\displaystyle \Phi (x)=38}$

chemistry

38 is the atomic number of strontium .

Individual evidence

1. ↑ A088054 - OEIS. Accessed June 1, 2020 . 
2. ^ Library Genesis: Number story: from counting to cryptography . [New York]: Copernicus, 2008 ( archive.org [accessed June 1, 2020]).