28631392 has 12 divisors (see below), whose sum is σ = 56368116. Its totient is φ = 14315680.

The previous prime is 28631353. The next prime is 28631401. The reversal of 28631392 is 29313682.

It is a happy number.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 447334 + ... + 447397.

It is an arithmetic number, because the mean of its divisors is an integer number (4697343).

Almost surely, 2^28631392 is an apocalyptic number.

It is an amenable number.

28631392 is a deficient number, since it is larger than the sum of its proper divisors (27736724).

28631392 is an equidigital number, since it uses as much as digits as its factorization.

28631392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894741 (or 894733 counting only the distinct ones).

The product of its digits is 15552, while the sum is 34.

The square root of 28631392 is about 5350.8309635046. The cubic root of 28631392 is about 305.9244263509.

The spelling of 28631392 in words is "twenty-eight million, six hundred thirty-one thousand, three hundred ninety-two".