28877564356 has 9 divisors (see below), whose sum is σ = 50536332399. Its totient is φ = 14438612244.

The previous prime is 28877564321. The next prime is 28877564363. The reversal of 28877564356 is 65346577882.

The square root of 28877564356 is 169934.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28877564294 and 28877564303.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 297385 + ... + 382351.

Almost surely, 2^28877564356 is an apocalyptic number.

28877564356 is the 169934-th square number.

It is an amenable number.

28877564356 is a deficient number, since it is larger than the sum of its proper divisors (21658768043).

28877564356 is an frugal number, since it uses more digits than its factorization.

28877564356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169938 (or 84969 counting only the distinct ones).

The product of its digits is 67737600, while the sum is 61.

The spelling of 28877564356 in words is "twenty-eight billion, eight hundred seventy-seven million, five hundred sixty-four thousand, three hundred fifty-six".