23022978 has 16 divisors (see below), whose sum is σ = 50232096. Its totient is φ = 6976640.

The previous prime is 23022953. The next prime is 23023001. The reversal of 23022978 is 87922032.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 174351 + ... + 174482.

It is an arithmetic number, because the mean of its divisors is an integer number (3139506).

Almost surely, 2^23022978 is an apocalyptic number.

23022978 is an abundant number, since it is smaller than the sum of its proper divisors (27209118).

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

23022978 is a wasteful number, since it uses less digits than its factorization.

23022978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348849.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 23022978 is about 4798.2265473819. The cubic root of 23022978 is about 284.4813713565.

The spelling of 23022978 in words is "twenty-three million, twenty-two thousand, nine hundred seventy-eight".