28817612 has 6 divisors (see below), whose sum is σ = 50430828. Its totient is φ = 14408804.

The previous prime is 28817603. The next prime is 28817639. The reversal of 28817612 is 21671882.

It is a super-2 number, since 2×28817612² = 1660909522765088, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3602198 + ... + 3602205.

It is an arithmetic number, because the mean of its divisors is an integer number (8405138).

Almost surely, 2^28817612 is an apocalyptic number.

It is an amenable number.

28817612 is a deficient number, since it is larger than the sum of its proper divisors (21613216).

28817612 is a wasteful number, since it uses less digits than its factorization.

28817612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7204407 (or 7204405 counting only the distinct ones).

The product of its digits is 10752, while the sum is 35.

The square root of 28817612 is about 5368.2037964295. The cubic root of 28817612 is about 306.5862428257.

The spelling of 28817612 in words is "twenty-eight million, eight hundred seventeen thousand, six hundred twelve".