28635924 has 24 divisors (see below), whose sum is σ = 67481568. Its totient is φ = 9450400.

The previous prime is 28635923. The next prime is 28635931. The reversal of 28635924 is 42953682.

It is a happy number.

It is a super-2 number, since 2×28635924² = 1640032286667552, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28635923) 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 7 ways as a sum of consecutive naturals, for example, 10602 + ... + 13025.

It is an arithmetic number, because the mean of its divisors is an integer number (2811732).

Almost surely, 2^28635924 is an apocalyptic number.

It is an amenable number.

28635924 is an abundant number, since it is smaller than the sum of its proper divisors (38845644).

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

28635924 is a wasteful number, since it uses less digits than its factorization.

28635924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23735 (or 23733 counting only the distinct ones).

The product of its digits is 103680, while the sum is 39.

The square root of 28635924 is about 5351.2544323738. The cubic root of 28635924 is about 305.9405668673.

The spelling of 28635924 in words is "twenty-eight million, six hundred thirty-five thousand, nine hundred twenty-four".