28590172 has 24 divisors (see below), whose sum is σ = 55742400. Its totient is φ = 12739776.

The previous prime is 28590139. The next prime is 28590181. The reversal of 28590172 is 27109582.

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, 7972 + ... + 10987.

It is an arithmetic number, because the mean of its divisors is an integer number (2322600).

Almost surely, 2^28590172 is an apocalyptic number.

It is an amenable number.

28590172 is a deficient number, since it is larger than the sum of its proper divisors (27152228).

28590172 is a wasteful number, since it uses less digits than its factorization.

28590172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19005 (or 19003 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 28590172 is about 5346.9778379941. The cubic root of 28590172 is about 305.7775448994. Note that the first 3 decimals are identical.

The spelling of 28590172 in words is "twenty-eight million, five hundred ninety thousand, one hundred seventy-two".