28133651756 has 12 divisors (see below), whose sum is σ = 56267303568. Its totient is φ = 12057279312.

The previous prime is 28133651729. The next prime is 28133651771. The reversal of 28133651756 is 65715633182.

28133651756 is an admirable number.

It is a super-2 number, since 2×28133651756² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 28133651756.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 502386611 + ... + 502386666.

It is an arithmetic number, because the mean of its divisors is an integer number (4688941964).

Almost surely, 2^28133651756 is an apocalyptic number.

It is an amenable number.

28133651756 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.

28133651756 is a wasteful number, since it uses less digits than its factorization.

28133651756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004773288 (or 1004773286 counting only the distinct ones).

The product of its digits is 907200, while the sum is 47.

The spelling of 28133651756 in words is "twenty-eight billion, one hundred thirty-three million, six hundred fifty-one thousand, seven hundred fifty-six".