23291868 has 24 divisors (see below), whose sum is σ = 54611200. Its totient is φ = 7726320.

The previous prime is 23291861. The next prime is 23291897. The reversal of 23291868 is 86819232.

It is a happy number.

It is a super-2 number, since 2×23291868² = 1085022229858848, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23291861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2068 + ... + 7131.

Almost surely, 2^23291868 is an apocalyptic number.

It is an amenable number.

23291868 is an abundant number, since it is smaller than the sum of its proper divisors (31319332).

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

23291868 is a wasteful number, since it uses less digits than its factorization.

23291868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9417 (or 9415 counting only the distinct ones).

The product of its digits is 41472, while the sum is 39.

The square root of 23291868 is about 4826.1649370903. The cubic root of 23291868 is about 285.5845926140.

The spelling of 23291868 in words is "twenty-three million, two hundred ninety-one thousand, eight hundred sixty-eight".