28870472 has 16 divisors (see below), whose sum is σ = 54378240. Its totient is φ = 14369616.

The previous prime is 28870469. The next prime is 28870477. The reversal of 28870472 is 27407882.

It is not an unprimeable number, because it can be changed into a prime (28870477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6308 + ... + 9875.

It is an arithmetic number, because the mean of its divisors is an integer number (3398640).

Almost surely, 2^28870472 is an apocalyptic number.

It is an amenable number.

28870472 is a deficient number, since it is larger than the sum of its proper divisors (25507768).

28870472 is a wasteful number, since it uses less digits than its factorization.

28870472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16412 (or 16408 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 38.

The square root of 28870472 is about 5373.1249752821. The cubic root of 28870472 is about 306.7735848572.

It can be divided in two parts, 2 and 8870472, that multiplied together give a square (17740944 = 4212²).

The spelling of 28870472 in words is "twenty-eight million, eight hundred seventy thousand, four hundred seventy-two".