28475500 has 24 divisors (see below), whose sum is σ = 62191584. Its totient is φ = 11390000.

The previous prime is 28475479. The next prime is 28475537. The reversal of 28475500 is 557482.

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, 27976 + ... + 28975.

It is an arithmetic number, because the mean of its divisors is an integer number (2591316).

Almost surely, 2^28475500 is an apocalyptic number.

28475500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28475500 is an abundant number, since it is smaller than the sum of its proper divisors (33716084).

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

28475500 is a wasteful number, since it uses less digits than its factorization.

28475500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56970 (or 56958 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 28475500 is about 5336.2439974199. The cubic root of 28475500 is about 305.3681838691.

The spelling of 28475500 in words is "twenty-eight million, four hundred seventy-five thousand, five hundred".