28313956 has 24 divisors (see below), whose sum is σ = 54712224. Its totient is φ = 12713280.

The previous prime is 28313941. The next prime is 28313963. The reversal of 28313956 is 65931382.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

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, 225 + ... + 7528.

It is an arithmetic number, because the mean of its divisors is an integer number (2279676).

Almost surely, 2^28313956 is an apocalyptic number.

It is an amenable number.

28313956 is a deficient number, since it is larger than the sum of its proper divisors (26398268).

28313956 is a wasteful number, since it uses less digits than its factorization.

28313956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7851 (or 7849 counting only the distinct ones).

The product of its digits is 38880, while the sum is 37.

The square root of 28313956 is about 5321.0859793843. The cubic root of 28313956 is about 304.7896282893.

The spelling of 28313956 in words is "twenty-eight million, three hundred thirteen thousand, nine hundred fifty-six".