28306372 has 12 divisors (see below), whose sum is σ = 49583296. Its totient is φ = 14139720.

The previous prime is 28306367. The next prime is 28306393. The reversal of 28306372 is 27360382.

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, 2497 + ... + 7927.

Almost surely, 2^28306372 is an apocalyptic number.

It is an amenable number.

28306372 is a deficient number, since it is larger than the sum of its proper divisors (21276924).

28306372 is a wasteful number, since it uses less digits than its factorization.

28306372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6738 (or 6736 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 28306372 is about 5320.3732951739. The cubic root of 28306372 is about 304.7624128417.

The spelling of 28306372 in words is "twenty-eight million, three hundred six thousand, three hundred seventy-two".