28580120 has 16 divisors (see below), whose sum is σ = 64305360. Its totient is φ = 11432032.

The previous prime is 28580113. The next prime is 28580143. The reversal of 28580120 is 2108582.

It is a self number, because there is not a number n which added to its sum of digits gives 28580120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 357212 + ... + 357291.

It is an arithmetic number, because the mean of its divisors is an integer number (4019085).

Almost surely, 2^28580120 is an apocalyptic number.

28580120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28580120 is an abundant number, since it is smaller than the sum of its proper divisors (35725240).

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

28580120 is a wasteful number, since it uses less digits than its factorization.

28580120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714514 (or 714510 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 28580120 is about 5346.0377851265. The cubic root of 28580120 is about 305.7417046560.

The spelling of 28580120 in words is "twenty-eight million, five hundred eighty thousand, one hundred twenty".