28872364 has 12 divisors (see below), whose sum is σ = 51759288. Its totient is φ = 14084000.

The previous prime is 28872359. The next prime is 28872379. The reversal of 28872364 is 46327882.

It is a super-2 number, since 2×28872364² = 1667226805896992, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 87862 + ... + 88189.

It is an arithmetic number, because the mean of its divisors is an integer number (4313274).

Almost surely, 2^28872364 is an apocalyptic number.

It is an amenable number.

28872364 is a deficient number, since it is larger than the sum of its proper divisors (22886924).

28872364 is a wasteful number, since it uses less digits than its factorization.

28872364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176096 (or 176094 counting only the distinct ones).

The product of its digits is 129024, while the sum is 40.

The square root of 28872364 is about 5373.3010338152. The cubic root of 28872364 is about 306.7802860864.

The spelling of 28872364 in words is "twenty-eight million, eight hundred seventy-two thousand, three hundred sixty-four".