23531928 has 32 divisors (see below), whose sum is σ = 67234560. Its totient is φ = 6723360.

The previous prime is 23531917. The next prime is 23531929. The reversal of 23531928 is 82913532.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23531929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69868 + ... + 70203.

It is an arithmetic number, because the mean of its divisors is an integer number (2101080).

Almost surely, 2^23531928 is an apocalyptic number.

23531928 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

23531928 is an abundant number, since it is smaller than the sum of its proper divisors (43702632).

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

23531928 is a wasteful number, since it uses less digits than its factorization.

23531928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140087 (or 140083 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 23531928 is about 4850.9718613903. The cubic root of 23531928 is about 286.5623765820.

The spelling of 23531928 in words is "twenty-three million, five hundred thirty-one thousand, nine hundred twenty-eight".