28356908 has 24 divisors (see below), whose sum is σ = 50909040. Its totient is φ = 13815360.

The previous prime is 28356877. The next prime is 28356929. The reversal of 28356908 is 80965382.

It is a super-2 number, since 2×28356908² = 1608228462640928, which contains 22 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

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 in 7 ways as a sum of consecutive naturals, for example, 38003 + ... + 38741.

It is an arithmetic number, because the mean of its divisors is an integer number (2121210).

Almost surely, 2^28356908 is an apocalyptic number.

It is an amenable number.

28356908 is a deficient number, since it is larger than the sum of its proper divisors (22552132).

28356908 is a wasteful number, since it uses less digits than its factorization.

28356908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977 (or 975 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 28356908 is about 5325.1204681209. The cubic root of 28356908 is about 304.9436714036.

The spelling of 28356908 in words is "twenty-eight million, three hundred fifty-six thousand, nine hundred eight".