28837856 has 12 divisors (see below), whose sum is σ = 56774592. Its totient is φ = 14418912.

The previous prime is 28837849. The next prime is 28837859. The reversal of 28837856 is 65873882.

It is a self number, because there is not a number n which added to its sum of digits gives 28837856.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28837859) 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 as a sum of consecutive naturals, namely, 450560 + ... + 450623.

It is an arithmetic number, because the mean of its divisors is an integer number (4731216).

Almost surely, 2^28837856 is an apocalyptic number.

It is an amenable number.

28837856 is a deficient number, since it is larger than the sum of its proper divisors (27936736).

28837856 is an equidigital number, since it uses as much as digits as its factorization.

28837856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901193 (or 901185 counting only the distinct ones).

The product of its digits is 645120, while the sum is 47.

The square root of 28837856 is about 5370.0890122977. The cubic root of 28837856 is about 306.6580169793.

The spelling of 28837856 in words is "twenty-eight million, eight hundred thirty-seven thousand, eight hundred fifty-six".