28106572 has 12 divisors (see below), whose sum is σ = 52970176. Its totient is φ = 12972240.

The previous prime is 28106549. The next prime is 28106591. The reversal of 28106572 is 27560182.

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, 270204 + ... + 270307.

Almost surely, 2^28106572 is an apocalyptic number.

It is an amenable number.

28106572 is a deficient number, since it is larger than the sum of its proper divisors (24863604).

28106572 is a wasteful number, since it uses less digits than its factorization.

28106572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540528 (or 540526 counting only the distinct ones).

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

The square root of 28106572 is about 5301.5631657088. The cubic root of 28106572 is about 304.0436658191.

The spelling of 28106572 in words is "twenty-eight million, one hundred six thousand, five hundred seventy-two".