28856908 has 18 divisors (see below), whose sum is σ = 52188108. Its totient is φ = 13961160.

The previous prime is 28856903. The next prime is 28856917. The reversal of 28856908 is 80965882.

It is a happy number.

It is a super-2 number, since 2×28856908² = 1665442278640928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28856903) 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 5 ways as a sum of consecutive naturals, for example, 91 + ... + 7597.

Almost surely, 2^28856908 is an apocalyptic number.

It is an amenable number.

28856908 is a deficient number, since it is larger than the sum of its proper divisors (23331200).

28856908 is a wasteful number, since it uses less digits than its factorization.

28856908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7573 (or 7540 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 46.

The square root of 28856908 is about 5371.8626192411. The cubic root of 28856908 is about 306.7255342777.

The spelling of 28856908 in words is "twenty-eight million, eight hundred fifty-six thousand, nine hundred eight".