28472712 has 32 divisors (see below), whose sum is σ = 74278080. Its totient is φ = 9078080.

The previous prime is 28472707. The next prime is 28472747. The reversal of 28472712 is 21727482.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25239 + ... + 26342.

It is an arithmetic number, because the mean of its divisors is an integer number (2321190).

Almost surely, 2^28472712 is an apocalyptic number.

It is an amenable number.

28472712 is an abundant number, since it is smaller than the sum of its proper divisors (45805368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28472712 is a wasteful number, since it uses less digits than its factorization.

28472712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51613 (or 51609 counting only the distinct ones).

The product of its digits is 12544, while the sum is 33.

The square root of 28472712 is about 5335.9827585928. The cubic root of 28472712 is about 305.3582174736.

The spelling of 28472712 in words is "twenty-eight million, four hundred seventy-two thousand, seven hundred twelve".