28753864 has 48 divisors (see below), whose sum is σ = 58901760. Its totient is φ = 13120800.

The previous prime is 28753861. The next prime is 28753903. The reversal of 28753864 is 46835782.

It is a self number, because there is not a number n which added to its sum of digits gives 28753864.

It is not an unprimeable number, because it can be changed into a prime (28753861) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 404949 + ... + 405019.

It is an arithmetic number, because the mean of its divisors is an integer number (1227120).

Almost surely, 2^28753864 is an apocalyptic number.

It is an amenable number.

28753864 is an abundant number, since it is smaller than the sum of its proper divisors (30147896).

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

28753864 is a wasteful number, since it uses less digits than its factorization.

28753864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202 (or 127 counting only the distinct ones).

The product of its digits is 322560, while the sum is 43.

The square root of 28753864 is about 5362.2629551338. The cubic root of 28753864 is about 306.3600074601.

The spelling of 28753864 in words is "twenty-eight million, seven hundred fifty-three thousand, eight hundred sixty-four".