28572860 has 24 divisors (see below), whose sum is σ = 60103680. Its totient is φ = 11409984.

The previous prime is 28572847. The next prime is 28572871. The reversal of 28572860 is 6827582.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21701 + ... + 22979.

It is an arithmetic number, because the mean of its divisors is an integer number (2504320).

Almost surely, 2^28572860 is an apocalyptic number.

28572860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28572860 is an abundant number, since it is smaller than the sum of its proper divisors (31530820).

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

28572860 is a wasteful number, since it uses less digits than its factorization.

28572860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2405 (or 2403 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 28572860 is about 5345.3587344537. The cubic root of 28572860 is about 305.7158140165.

The spelling of 28572860 in words is "twenty-eight million, five hundred seventy-two thousand, eight hundred sixty".