28088680 has 32 divisors (see below), whose sum is σ = 63568800. Its totient is φ = 11169856.

The previous prime is 28088659. The next prime is 28088729. The reversal of 28088680 is 8688082.

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 5199 + ... + 9121.

It is an arithmetic number, because the mean of its divisors is an integer number (1986525).

Almost surely, 2^28088680 is an apocalyptic number.

28088680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28088680 is an abundant number, since it is smaller than the sum of its proper divisors (35480120).

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

28088680 is a wasteful number, since it uses less digits than its factorization.

28088680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4113 (or 4109 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 40.

The square root of 28088680 is about 5299.8754702351. The cubic root of 28088680 is about 303.9791363798.

The spelling of 28088680 in words is "twenty-eight million, eighty-eight thousand, six hundred eighty".