28160867344 has 15 divisors (see below), whose sum is σ = 54562981053. Its totient is φ = 14080098048.

The previous prime is 28160867333. The next prime is 28160867363. The reversal of 28160867344 is 44376806182.

The square root of 28160867344 is 167812.

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., 10020010000 + 18140857344 = 100100^2 + 134688^2 .

It is a super-2 number, since 2×28160867344² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

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, 650272 + ... + 692224.

Almost surely, 2^28160867344 is an apocalyptic number.

28160867344 is the 167812-nd square number.

It is an amenable number.

28160867344 is a deficient number, since it is larger than the sum of its proper divisors (26402113709).

28160867344 is an frugal number, since it uses more digits than its factorization.

28160867344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83914 (or 41955 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 49.

Multiplying 28160867344 by its sum of digits (49), we get a square (1379882499856 = 1174684²).

The spelling of 28160867344 in words is "twenty-eight billion, one hundred sixty million, eight hundred sixty-seven thousand, three hundred forty-four".