28625972 has 12 divisors (see below), whose sum is σ = 50287776. Its totient is φ = 14258040.

The previous prime is 28625969. The next prime is 28625981. The reversal of 28625972 is 27952682.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12554 + ... + 14657.

It is an arithmetic number, because the mean of its divisors is an integer number (4190648).

Almost surely, 2^28625972 is an apocalyptic number.

It is an amenable number.

28625972 is a deficient number, since it is larger than the sum of its proper divisors (21661804).

28625972 is a wasteful number, since it uses less digits than its factorization.

28625972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27478 (or 27476 counting only the distinct ones).

The product of its digits is 120960, while the sum is 41.

The square root of 28625972 is about 5350.3244761416. The cubic root of 28625972 is about 305.9051210254.

The spelling of 28625972 in words is "twenty-eight million, six hundred twenty-five thousand, nine hundred seventy-two".