23115864 has 32 divisors (see below), whose sum is σ = 58057920. Its totient is φ = 7669536.

The previous prime is 23115853. The next prime is 23115877. The reversal of 23115864 is 46851132.

It is a congruent number.

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, 3327 + ... + 7569.

It is an arithmetic number, because the mean of its divisors is an integer number (1814310).

Almost surely, 2^23115864 is an apocalyptic number.

23115864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

23115864 is an abundant number, since it is smaller than the sum of its proper divisors (34942056).

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

23115864 is a wasteful number, since it uses less digits than its factorization.

23115864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4479 (or 4475 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 23115864 is about 4807.8960055309. The cubic root of 23115864 is about 284.8634371901.

Adding to 23115864 its reverse (46851132), we get a palindrome (69966996).

The spelling of 23115864 in words is "twenty-three million, one hundred fifteen thousand, eight hundred sixty-four".