28064992 has 24 divisors (see below), whose sum is σ = 56603232. Its totient is φ = 13689600.

The previous prime is 28064989. The next prime is 28064999. The reversal of 28064992 is 29946082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28064999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9384 + ... + 12007.

It is an arithmetic number, because the mean of its divisors is an integer number (2358468).

Almost surely, 2^28064992 is an apocalyptic number.

It is an amenable number.

28064992 is an abundant number, since it is smaller than the sum of its proper divisors (28538240).

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

28064992 is a wasteful number, since it uses less digits than its factorization.

28064992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21442 (or 21434 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 28064992 is about 5297.6402293852. The cubic root of 28064992 is about 303.8936608679.

The spelling of 28064992 in words is "twenty-eight million, sixty-four thousand, nine hundred ninety-two".