28576812 has 36 divisors (see below), whose sum is σ = 73295768. Its totient is φ = 8659200.

The previous prime is 28576789. The next prime is 28576819. The reversal of 28576812 is 21867582.

It is not an unprimeable number, because it can be changed into a prime (28576819) 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, 8389 + ... + 11292.

Almost surely, 2^28576812 is an apocalyptic number.

28576812 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28576812 is an abundant number, since it is smaller than the sum of its proper divisors (44718956).

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

28576812 is a wasteful number, since it uses less digits than its factorization.

28576812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19710 (or 19697 counting only the distinct ones).

The product of its digits is 53760, while the sum is 39.

The square root of 28576812 is about 5345.7283881619. The cubic root of 28576812 is about 305.7299081977.

It can be divided in two parts, 2857 and 6812, that added together give a palindrome (9669).

The spelling of 28576812 in words is "twenty-eight million, five hundred seventy-six thousand, eight hundred twelve".