23315972 has 24 divisors (see below), whose sum is σ = 41995800. Its totient is φ = 11321856.

The previous prime is 23315947. The next prime is 23315989. The reversal of 23315972 is 27951332.

It can be written as a sum of positive squares in 4 ways, for example, as 5541316 + 17774656 = 2354^2 + 4216^2 .

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22604 + ... + 23612.

It is an arithmetic number, because the mean of its divisors is an integer number (1749825).

Almost surely, 2^23315972 is an apocalyptic number.

It is an amenable number.

23315972 is a deficient number, since it is larger than the sum of its proper divisors (18679828).

23315972 is a wasteful number, since it uses less digits than its factorization.

23315972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175 (or 1173 counting only the distinct ones).

The product of its digits is 11340, while the sum is 32.

The square root of 23315972 is about 4828.6615122620. The cubic root of 23315972 is about 285.6830727331.

The spelling of 23315972 in words is "twenty-three million, three hundred fifteen thousand, nine hundred seventy-two".