28755912 has 32 divisors (see below), whose sum is σ = 72607680. Its totient is φ = 9489600.

The previous prime is 28755871. The next prime is 28755967. The reversal of 28755912 is 21955782.

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, 3508 + ... + 8355.

It is an arithmetic number, because the mean of its divisors is an integer number (2268990).

Almost surely, 2^28755912 is an apocalyptic number.

It is an amenable number.

28755912 is an abundant number, since it is smaller than the sum of its proper divisors (43851768).

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

28755912 is a wasteful number, since it uses less digits than its factorization.

28755912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11973 (or 11969 counting only the distinct ones).

The product of its digits is 50400, while the sum is 39.

The square root of 28755912 is about 5362.4539158859. The cubic root of 28755912 is about 306.3672808061.

The spelling of 28755912 in words is "twenty-eight million, seven hundred fifty-five thousand, nine hundred twelve".