238623 has 16 divisors (see below), whose sum is σ = 397056. Its totient is φ = 123840.

The previous prime is 238591. The next prime is 238627. The reversal of 238623 is 326832.

It is not a de Polignac number, because 238623 - 2⁵ = 238591 is a prime.

It is a super-2 number, since 2×238623² = 113881872258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 238593 and 238602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 286 + ... + 747.

It is an arithmetic number, because the mean of its divisors is an integer number (24816).

2²³⁸⁶²³ is an apocalyptic number.

238623 is a deficient number, since it is larger than the sum of its proper divisors (158433).

238623 is a wasteful number, since it uses less digits than its factorization.

238623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054.

The product of its digits is 1728, while the sum is 24.

The square root of 238623 is about 488.4905321498. The cubic root of 238623 is about 62.0255704446.

Subtracting 238623 from its reverse (326832), we obtain a square (88209 = 297²).

It can be divided in two parts, 238 and 623, that added together give a triangular number (861 = T₄₁).

The spelling of 238623 in words is "two hundred thirty-eight thousand, six hundred twenty-three".