28432924 has 24 divisors (see below), whose sum is σ = 54391568. Its totient is φ = 12925440.

The previous prime is 28432913. The next prime is 28432981. The reversal of 28432924 is 42923482.

It is a self number, because there is not a number n which added to its sum of digits gives 28432924.

It is a congruent number.

It is an unprimeable number.

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, 597 + ... + 7564.

Almost surely, 2^28432924 is an apocalyptic number.

It is an amenable number.

28432924 is a deficient number, since it is larger than the sum of its proper divisors (25958644).

28432924 is a wasteful number, since it uses less digits than its factorization.

28432924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8245 (or 8243 counting only the distinct ones).

The product of its digits is 27648, while the sum is 34.

The square root of 28432924 is about 5332.2531822861. The cubic root of 28432924 is about 305.2159144799.

The spelling of 28432924 in words is "twenty-eight million, four hundred thirty-two thousand, nine hundred twenty-four".