28753812 has 24 divisors (see below), whose sum is σ = 74547200. Its totient is φ = 9584568.

The previous prime is 28753759. The next prime is 28753849. The reversal of 28753812 is 21835782.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 133012 + ... + 133227.

Almost surely, 2^28753812 is an apocalyptic number.

It is an amenable number.

28753812 is an abundant number, since it is smaller than the sum of its proper divisors (45793388).

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

28753812 is a wasteful number, since it uses less digits than its factorization.

28753812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266252 (or 266244 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 28753812 is about 5362.2581064324. The cubic root of 28753812 is about 306.3598227808.

The spelling of 28753812 in words is "twenty-eight million, seven hundred fifty-three thousand, eight hundred twelve".