28831924 has 24 divisors (see below), whose sum is σ = 55456128. Its totient is φ = 13007040.

The previous prime is 28831889. The next prime is 28831927. The reversal of 28831924 is 42913882.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28831927) 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, 3637 + ... + 8419.

It is an arithmetic number, because the mean of its divisors is an integer number (2310672).

Almost surely, 2^28831924 is an apocalyptic number.

It is an amenable number.

28831924 is a deficient number, since it is larger than the sum of its proper divisors (26624204).

28831924 is a wasteful number, since it uses less digits than its factorization.

28831924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4935 (or 4933 counting only the distinct ones).

The product of its digits is 27648, while the sum is 37.

The square root of 28831924 is about 5369.5366652999. The cubic root of 28831924 is about 306.6369888314.

The spelling of 28831924 in words is "twenty-eight million, eight hundred thirty-one thousand, nine hundred twenty-four".