28761924 has 24 divisors (see below), whose sum is σ = 69276928. Its totient is φ = 9277920.

The previous prime is 28761919. The next prime is 28761947. The reversal of 28761924 is 42916782.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38287 + ... + 39030.

Almost surely, 2^28761924 is an apocalyptic number.

It is an amenable number.

28761924 is an abundant number, since it is smaller than the sum of its proper divisors (40515004).

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

28761924 is a wasteful number, since it uses less digits than its factorization.

28761924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77355 (or 77353 counting only the distinct ones).

The product of its digits is 48384, while the sum is 39.

The square root of 28761924 is about 5363.0144508476. The cubic root of 28761924 is about 306.3886300594.

The spelling of 28761924 in words is "twenty-eight million, seven hundred sixty-one thousand, nine hundred twenty-four".