28612908 has 36 divisors (see below), whose sum is σ = 74823840. Its totient is φ = 9208416.

The previous prime is 28612849. The next prime is 28612967. The reversal of 28612908 is 80921682.

It is an interprime number because it is at equal distance from previous prime (28612849) and next prime (28612967).

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12660 + ... + 14747.

It is an arithmetic number, because the mean of its divisors is an integer number (2078440).

Almost surely, 2^28612908 is an apocalyptic number.

It is an amenable number.

28612908 is an abundant number, since it is smaller than the sum of its proper divisors (46210932).

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

28612908 is a wasteful number, since it uses less digits than its factorization.

28612908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27446 (or 27441 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 28612908 is about 5349.1034762846. The cubic root of 28612908 is about 305.8585787619.

The spelling of 28612908 in words is "twenty-eight million, six hundred twelve thousand, nine hundred eight".