28597812 has 24 divisors (see below), whose sum is σ = 70240800. Its totient is φ = 9030816.

The previous prime is 28597771. The next prime is 28597813. The reversal of 28597812 is 21879582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28597813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62487 + ... + 62942.

It is an arithmetic number, because the mean of its divisors is an integer number (2926700).

Almost surely, 2^28597812 is an apocalyptic number.

It is an amenable number.

28597812 is an abundant number, since it is smaller than the sum of its proper divisors (41642988).

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

28597812 is a wasteful number, since it uses less digits than its factorization.

28597812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125455 (or 125453 counting only the distinct ones).

The product of its digits is 80640, while the sum is 42.

The square root of 28597812 is about 5347.6922125343. The cubic root of 28597812 is about 305.8047795774.

The spelling of 28597812 in words is "twenty-eight million, five hundred ninety-seven thousand, eight hundred twelve".