28940892 has 24 divisors (see below), whose sum is σ = 69100416. Its totient is φ = 9422448.

The previous prime is 28940881. The next prime is 28940921. The reversal of 28940892 is 29804982.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27528 + ... + 28559.

It is an arithmetic number, because the mean of its divisors is an integer number (2879184).

Almost surely, 2^28940892 is an apocalyptic number.

It is an amenable number.

28940892 is an abundant number, since it is smaller than the sum of its proper divisors (40159524).

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

28940892 is a wasteful number, since it uses less digits than its factorization.

28940892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56137 (or 56135 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 28940892 is about 5379.6739678163. The cubic root of 28940892 is about 307.0228066821.

The spelling of 28940892 in words is "twenty-eight million, nine hundred forty thousand, eight hundred ninety-two".