28655525736 has 32 divisors (see below), whose sum is σ = 79598683200. Its totient is φ = 9551841840.

The previous prime is 28655525681. The next prime is 28655525761. The reversal of 28655525736 is 63752555682.

It is a happy number.

28655525736 is a `hidden beast` number, since 2 + 8 + 6 + 5 + 552 + 57 + 36 = 666.

It is a super-2 number, since 2×28655525736² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66332020 + ... + 66332451.

It is an arithmetic number, because the mean of its divisors is an integer number (2487458850).

Almost surely, 2^28655525736 is an apocalyptic number.

It is an amenable number.

28655525736 is an abundant number, since it is smaller than the sum of its proper divisors (50943157464).

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

28655525736 is a wasteful number, since it uses less digits than its factorization.

28655525736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132664486 (or 132664476 counting only the distinct ones).

The product of its digits is 15120000, while the sum is 54.

The spelling of 28655525736 in words is "twenty-eight billion, six hundred fifty-five million, five hundred twenty-five thousand, seven hundred thirty-six".