28580900 has 36 divisors (see below), whose sum is σ = 62287680. Its totient is φ = 11383200.

The previous prime is 28580899. The next prime is 28580911. The reversal of 28580900 is 908582.

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, 30641 + ... + 31559.

Almost surely, 2^28580900 is an apocalyptic number.

28580900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28580900 is an abundant number, since it is smaller than the sum of its proper divisors (33706780).

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

28580900 is a wasteful number, since it uses less digits than its factorization.

28580900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244 (or 1237 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 28580900 is about 5346.1107358527. The cubic root of 28580900 is about 305.7444860341.

The spelling of 28580900 in words is "twenty-eight million, five hundred eighty thousand, nine hundred".