28927886724 has 135 divisors (see below), whose sum is σ = 83219912391. Its totient is φ = 8755821360.

The previous prime is 28927886719. The next prime is 28927886803. The reversal of 28927886724 is 42768872982.

The square root of 28927886724 is 170082.

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

28927886724 is a `hidden beast` number, since 289 + 278 + 8 + 67 + 24 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 33675807 + ... + 33676665.

Almost surely, 2^28927886724 is an apocalyptic number.

28927886724 is the 170082-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28927886724

28927886724 is an abundant number, since it is smaller than the sum of its proper divisors (54292025667).

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

28927886724 is an equidigital number, since it uses as much as digits as its factorization.

28927886724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1756 (or 875 counting only the distinct ones).

The product of its digits is 43352064, while the sum is 63.

The spelling of 28927886724 in words is "twenty-eight billion, nine hundred twenty-seven million, eight hundred eighty-six thousand, seven hundred twenty-four".