28479262564 has 27 divisors (see below), whose sum is σ = 52611703641. Its totient is φ = 13487139360.

The previous prime is 28479262547. The next prime is 28479262571. The reversal of 28479262564 is 46526297482.

The square root of 28479262564 is 168758.

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

It can be written as a sum of positive squares in only one way, i.e., 10991844964 + 17487417600 = 104842^2 + 132240^2 .

It is a super-2 number, since 2×28479262564² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6410584 + ... + 6415024.

Almost surely, 2^28479262564 is an apocalyptic number.

28479262564 is the 168758-th square number.

It is an amenable number.

28479262564 is a deficient number, since it is larger than the sum of its proper divisors (24132441077).

28479262564 is an frugal number, since it uses more digits than its factorization.

28479262564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8924 (or 4462 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 55.

The spelling of 28479262564 in words is "twenty-eight billion, four hundred seventy-nine million, two hundred sixty-two thousand, five hundred sixty-four".