28573572 has 24 divisors (see below), whose sum is σ = 67931136. Its totient is φ = 9344608.

The previous prime is 28573553. The next prime is 28573621. The reversal of 28573572 is 27537582.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 28573572.

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, 21828 + ... + 23099.

It is an arithmetic number, because the mean of its divisors is an integer number (2830464).

Almost surely, 2^28573572 is an apocalyptic number.

It is an amenable number.

28573572 is an abundant number, since it is smaller than the sum of its proper divisors (39357564).

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

28573572 is a wasteful number, since it uses less digits than its factorization.

28573572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44987 (or 44985 counting only the distinct ones).

The product of its digits is 117600, while the sum is 39.

The square root of 28573572 is about 5345.4253338719. The cubic root of 28573572 is about 305.7183533475.

The spelling of 28573572 in words is "twenty-eight million, five hundred seventy-three thousand, five hundred seventy-two".