23957138 has 8 divisors (see below), whose sum is σ = 37827120. Its totient is φ = 11348100.

The previous prime is 23957137. The next prime is 23957159. The reversal of 23957138 is 83175932.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×23957138² = 1147888922302088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38), and also a Moran number because the ratio is a prime number: 630451 = 23957138 / (2 + 3 + 9 + 5 + 7 + 1 + 3 + 8).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23957137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 315188 + ... + 315263.

It is an arithmetic number, because the mean of its divisors is an integer number (4728390).

Almost surely, 2^23957138 is an apocalyptic number.

23957138 is a deficient number, since it is larger than the sum of its proper divisors (13869982).

23957138 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 11 representation: 23957138 = (12583397)₁₁.

23957138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630472.

The product of its digits is 45360, while the sum is 38.

The square root of 23957138 is about 4894.6029461030. The cubic root of 23957138 is about 288.2780959002.

The spelling of 23957138 in words is "twenty-three million, nine hundred fifty-seven thousand, one hundred thirty-eight".