28756756 has 12 divisors (see below), whose sum is σ = 57513568. Its totient is φ = 12324312.

The previous prime is 28756753. The next prime is 28756757. The reversal of 28756756 is 65765782.

28756756 is an admirable number.

28756756 is a modest number, since divided by 756756 gives 28 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28756753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 513486 + ... + 513541.

Almost surely, 2^28756756 is an apocalyptic number.

It is an amenable number.

28756756 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28756756 is a wasteful number, since it uses less digits than its factorization.

28756756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027038 (or 1027036 counting only the distinct ones).

The product of its digits is 705600, while the sum is 46.

The square root of 28756756 is about 5362.5326106235. The cubic root of 28756756 is about 306.3702781196.

The spelling of 28756756 in words is "twenty-eight million, seven hundred fifty-six thousand, seven hundred fifty-six".