23056978 has 32 divisors (see below), whose sum is σ = 41048064. Its totient is φ = 9508752.

The previous prime is 23056973. The next prime is 23056991. The reversal of 23056978 is 87965032.

It is a self number, because there is not a number n which added to its sum of digits gives 23056978.

It is not an unprimeable number, because it can be changed into a prime (23056973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43825 + ... + 44347.

It is an arithmetic number, because the mean of its divisors is an integer number (1282752).

Almost surely, 2^23056978 is an apocalyptic number.

23056978 is a deficient number, since it is larger than the sum of its proper divisors (17991086).

23056978 is a wasteful number, since it uses less digits than its factorization.

23056978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 23056978 is about 4801.7682159804. The cubic root of 23056978 is about 284.6213417981.

The spelling of 23056978 in words is "twenty-three million, fifty-six thousand, nine hundred seventy-eight".