23715138 has 32 divisors (see below), whose sum is σ = 48988800. Its totient is φ = 7648640.

The previous prime is 23715137. The next prime is 23715149. The reversal of 23715138 is 83151732.

It is not an unprimeable number, because it can be changed into a prime (23715137) 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 15 ways as a sum of consecutive naturals, for example, 36331 + ... + 36977.

It is an arithmetic number, because the mean of its divisors is an integer number (1530900).

Almost surely, 2^23715138 is an apocalyptic number.

23715138 is an abundant number, since it is smaller than the sum of its proper divisors (25273662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23715138 is a wasteful number, since it uses less digits than its factorization.

23715138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842.

The product of its digits is 5040, while the sum is 30.

The square root of 23715138 is about 4869.8190931491. The cubic root of 23715138 is about 287.3041408295.

The spelling of 23715138 in words is "twenty-three million, seven hundred fifteen thousand, one hundred thirty-eight".