28379272 has 16 divisors (see below), whose sum is σ = 53683740. Its totient is φ = 14063616.

The previous prime is 28379251. The next prime is 28379287. The reversal of 28379272 is 27297382.

It can be written as a sum of positive squares in 2 ways, for example, as 28366276 + 12996 = 5326^2 + 114^2 .

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, 14793 + ... + 16600.

Almost surely, 2^28379272 is an apocalyptic number.

It is an amenable number.

28379272 is a deficient number, since it is larger than the sum of its proper divisors (25304468).

28379272 is a wasteful number, since it uses less digits than its factorization.

28379272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31512 (or 31508 counting only the distinct ones).

The product of its digits is 84672, while the sum is 40.

The square root of 28379272 is about 5327.2199128626. The cubic root of 28379272 is about 305.0238161103.

The spelling of 28379272 in words is "twenty-eight million, three hundred seventy-nine thousand, two hundred seventy-two".