28070756 has 12 divisors (see below), whose sum is σ = 56141568. Its totient is φ = 12030312.

The previous prime is 28070737. The next prime is 28070759. The reversal of 28070756 is 65707082.

28070756 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (28070759) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 501236 + ... + 501291.

It is an arithmetic number, because the mean of its divisors is an integer number (4678464).

Almost surely, 2^28070756 is an apocalyptic number.

It is an amenable number.

28070756 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.

28070756 is a wasteful number, since it uses less digits than its factorization.

28070756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002538 (or 1002536 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 28070756 is about 5298.1842172578. The cubic root of 28070756 is about 303.9144640469.

The spelling of 28070756 in words is "twenty-eight million, seventy thousand, seven hundred fifty-six".