28876764 has 24 divisors (see below), whose sum is σ = 77004928. Its totient is φ = 8250480.

The previous prime is 28876747. The next prime is 28876781. The reversal of 28876764 is 46767882.

It is an interprime number because it is at equal distance from previous prime (28876747) and next prime (28876781).

It is a super-2 number, since 2×28876764² = 1667734998223392, which contains 22 as substring.

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, 171802 + ... + 171969.

Almost surely, 2^28876764 is an apocalyptic number.

It is an amenable number.

28876764 is an abundant number, since it is smaller than the sum of its proper divisors (48128164).

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

28876764 is a wasteful number, since it uses less digits than its factorization.

28876764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343785 (or 343783 counting only the distinct ones).

The product of its digits is 903168, while the sum is 48.

The square root of 28876764 is about 5373.7104499591. The cubic root of 28876764 is about 306.7958692082.

The spelling of 28876764 in words is "twenty-eight million, eight hundred seventy-six thousand, seven hundred sixty-four".