28017625 has 32 divisors (see below), whose sum is σ = 37065600. Its totient is φ = 21112000.

The previous prime is 28017601. The next prime is 28017631. The reversal of 28017625 is 52671082.

It is not a de Polignac number, because 28017625 - 2¹¹ = 28015577 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 213810 + ... + 213940.

It is an arithmetic number, because the mean of its divisors is an integer number (1158300).

Almost surely, 2^28017625 is an apocalyptic number.

28017625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28017625 is a deficient number, since it is larger than the sum of its proper divisors (9047975).

28017625 is a wasteful number, since it uses less digits than its factorization.

28017625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 28017625 is about 5293.1677660924. The cubic root of 28017625 is about 303.7225979673.

The spelling of 28017625 in words is "twenty-eight million, seventeen thousand, six hundred twenty-five".