28712672 has 12 divisors (see below), whose sum is σ = 56528136. Its totient is φ = 14356320.

The previous prime is 28712659. The next prime is 28712687. The reversal of 28712672 is 27621782.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 448604 + ... + 448667.

It is an arithmetic number, because the mean of its divisors is an integer number (4710678).

Almost surely, 2^28712672 is an apocalyptic number.

It is an amenable number.

28712672 is a deficient number, since it is larger than the sum of its proper divisors (27815464).

28712672 is an equidigital number, since it uses as much as digits as its factorization.

28712672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897281 (or 897273 counting only the distinct ones).

The product of its digits is 18816, while the sum is 35.

The square root of 28712672 is about 5358.4206628446. The cubic root of 28712672 is about 306.2136432198.

The spelling of 28712672 in words is "twenty-eight million, seven hundred twelve thousand, six hundred seventy-two".