23021868 has 12 divisors (see below), whose sum is σ = 53717720. Its totient is φ = 7673952.

The previous prime is 23021861. The next prime is 23021903. The reversal of 23021868 is 86812032.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (23021861) 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 3 ways as a sum of consecutive naturals, for example, 959233 + ... + 959256.

Almost surely, 2^23021868 is an apocalyptic number.

It is an amenable number.

23021868 is an abundant number, since it is smaller than the sum of its proper divisors (30695852).

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

23021868 is a wasteful number, since it uses less digits than its factorization.

23021868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1918496 (or 1918494 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 23021868 is about 4798.1108782520. The cubic root of 23021868 is about 284.4767994111.

The spelling of 23021868 in words is "twenty-three million, twenty-one thousand, eight hundred sixty-eight".