23138927 has 12 divisors (see below), whose sum is σ = 27786816. Its totient is φ = 19192320.

The previous prime is 23138917. The next prime is 23138957. The reversal of 23138927 is 72983132.

It is not a de Polignac number, because 23138927 - 2¹⁰ = 23137903 is a prime.

It is a super-2 number, since 2×23138927² = 1070819885422658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23138917) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6098 + ... + 9135.

It is an arithmetic number, because the mean of its divisors is an integer number (2315568).

Almost surely, 2^23138927 is an apocalyptic number.

23138927 is a deficient number, since it is larger than the sum of its proper divisors (4647889).

23138927 is a wasteful number, since it uses less digits than its factorization.

23138927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15278 (or 15271 counting only the distinct ones).

The product of its digits is 18144, while the sum is 35.

The square root of 23138927 is about 4810.2938579675. The cubic root of 23138927 is about 284.9581430270.

The spelling of 23138927 in words is "twenty-three million, one hundred thirty-eight thousand, nine hundred twenty-seven".