28570590 has 32 divisors (see below), whose sum is σ = 76188960. Its totient is φ = 7618752.

The previous prime is 28570571. The next prime is 28570621. The reversal of 28570590 is 9507582.

It is a super-2 number, since 2×28570590² = 1632557225896200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52639 + ... + 53178.

It is an arithmetic number, because the mean of its divisors is an integer number (2380905).

Almost surely, 2^28570590 is an apocalyptic number.

28570590 is an abundant number, since it is smaller than the sum of its proper divisors (47618370).

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

28570590 is a wasteful number, since it uses less digits than its factorization.

28570590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105833 (or 105827 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 28570590 is about 5345.1463964984. The cubic root of 28570590 is about 305.7077178339.

The spelling of 28570590 in words is "twenty-eight million, five hundred seventy thousand, five hundred ninety".