28651924 has 24 divisors (see below), whose sum is σ = 60320960. Its totient is φ = 11632896.

The previous prime is 28651921. The next prime is 28651933. The reversal of 28651924 is 42915682.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28651921) 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, 26397 + ... + 27460.

Almost surely, 2^28651924 is an apocalyptic number.

It is an amenable number.

28651924 is an abundant number, since it is smaller than the sum of its proper divisors (31669036).

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

28651924 is a wasteful number, since it uses less digits than its factorization.

28651924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53887 (or 53885 counting only the distinct ones).

The product of its digits is 34560, while the sum is 37.

The square root of 28651924 is about 5352.7492001774. The cubic root of 28651924 is about 305.9975365402.

The spelling of 28651924 in words is "twenty-eight million, six hundred fifty-one thousand, nine hundred twenty-four".