28820088 has 48 divisors (see below), whose sum is σ = 85152600. Its totient is φ = 8733120.

The previous prime is 28820063. The next prime is 28820119. The reversal of 28820088 is 88002882.

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 a congruent number.

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, 17403 + ... + 18986.

Almost surely, 2^28820088 is an apocalyptic number.

It is an amenable number.

28820088 is an abundant number, since it is smaller than the sum of its proper divisors (56332512).

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

28820088 is a wasteful number, since it uses less digits than its factorization.

28820088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36412 (or 36405 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 36.

The square root of 28820088 is about 5368.4344086521. The cubic root of 28820088 is about 306.5950231715.

The spelling of 28820088 in words is "twenty-eight million, eight hundred twenty thousand, eighty-eight".