28589972 has 24 divisors (see below), whose sum is σ = 51305184. Its totient is φ = 13936032.

The previous prime is 28589947. The next prime is 28589983. The reversal of 28589972 is 27998582.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 28589972.

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, 28178 + ... + 29174.

It is an arithmetic number, because the mean of its divisors is an integer number (2137716).

Almost surely, 2^28589972 is an apocalyptic number.

It is an amenable number.

28589972 is a deficient number, since it is larger than the sum of its proper divisors (22715212).

28589972 is a wasteful number, since it uses less digits than its factorization.

28589972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175 (or 1173 counting only the distinct ones).

The product of its digits is 725760, while the sum is 50.

The square root of 28589972 is about 5346.9591358079. The cubic root of 28589972 is about 305.7768318846.

The spelling of 28589972 in words is "twenty-eight million, five hundred eighty-nine thousand, nine hundred seventy-two".