28970472 has 32 divisors (see below), whose sum is σ = 72578880. Its totient is φ = 9636480.

The previous prime is 28970467. The next prime is 28970531. The reversal of 28970472 is 27407982.

It is a self number, because there is not a number n which added to its sum of digits gives 28970472.

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 in 7 ways as a sum of consecutive naturals, for example, 14188 + ... + 16100.

It is an arithmetic number, because the mean of its divisors is an integer number (2268090).

Almost surely, 2^28970472 is an apocalyptic number.

It is an amenable number.

28970472 is an abundant number, since it is smaller than the sum of its proper divisors (43608408).

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

28970472 is a wasteful number, since it uses less digits than its factorization.

28970472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2553 (or 2549 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 28970472 is about 5382.4225029256. The cubic root of 28970472 is about 307.1273720180.

The spelling of 28970472 in words is "twenty-eight million, nine hundred seventy thousand, four hundred seventy-two".