28294080 has 56 divisors (see below), whose sum is σ = 89836752. Its totient is φ = 7544832.

The previous prime is 28294073. The next prime is 28294109. The reversal of 28294080 is 8049282.

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, 13777 + ... + 15696.

Almost surely, 2^28294080 is an apocalyptic number.

28294080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28294080 is an abundant number, since it is smaller than the sum of its proper divisors (61542672).

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

28294080 is a wasteful number, since it uses less digits than its factorization.

28294080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29493 (or 29483 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 28294080 is about 5319.2179876369. The cubic root of 28294080 is about 304.7182922463.

The spelling of 28294080 in words is "twenty-eight million, two hundred ninety-four thousand, eighty".