28921764096 has 135 divisors (see below), whose sum is σ = 86312551633. Its totient is φ = 9632424960.

The previous prime is 28921764089. The next prime is 28921764143. The reversal of 28921764096 is 69046712982.

The square root of 28921764096 is 170064.

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

28921764096 is a `hidden beast` number, since 289 + 217 + 64 + 0 + 96 = 666.

It can be written as a sum of positive squares in only one way, i.e., 26524682496 + 2397081600 = 162864^2 + 48960^2 .

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

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 24488626 + ... + 24489806.

Almost surely, 2^28921764096 is an apocalyptic number.

28921764096 is the 170064-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28921764096

28921764096 is an abundant number, since it is smaller than the sum of its proper divisors (57390787537).

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

28921764096 is an frugal number, since it uses more digits than its factorization.

28921764096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2390 (or 1186 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 28921764096 in words is "twenty-eight billion, nine hundred twenty-one million, seven hundred sixty-four thousand, ninety-six".