28500704320 has 112 divisors (see below), whose sum is σ = 74188856448. Its totient is φ = 10342645760.

The previous prime is 28500704317. The next prime is 28500704347. The reversal of 28500704320 is 2340700582.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1762512 + ... + 1778608.

It is an arithmetic number, because the mean of its divisors is an integer number (662400504).

Almost surely, 2^28500704320 is an apocalyptic number.

28500704320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28500704320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37094428224).

28500704320 is an abundant number, since it is smaller than the sum of its proper divisors (45688152128).

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

28500704320 is a wasteful number, since it uses less digits than its factorization.

28500704320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16628 (or 16618 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The spelling of 28500704320 in words is "twenty-eight billion, five hundred million, seven hundred four thousand, three hundred twenty".