28507672 has 16 divisors (see below), whose sum is σ = 55776240. Its totient is φ = 13634016.

The previous prime is 28507663. The next prime is 28507697. The reversal of 28507672 is 27670582.

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, 77283 + ... + 77650.

It is an arithmetic number, because the mean of its divisors is an integer number (3486015).

Almost surely, 2^28507672 is an apocalyptic number.

It is an amenable number.

28507672 is a deficient number, since it is larger than the sum of its proper divisors (27268568).

28507672 is a wasteful number, since it uses less digits than its factorization.

28507672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154962 (or 154958 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 28507672 is about 5339.2576262997. The cubic root of 28507672 is about 305.4831436024.

The spelling of 28507672 in words is "twenty-eight million, five hundred seven thousand, six hundred seventy-two".