27782889124 has 9 divisors (see below), whose sum is σ = 48620639361. Its totient is φ = 13891277880.

The previous prime is 27782889103. The next prime is 27782889133. The reversal of 27782889124 is 42198828772.

The square root of 27782889124 is 166682.

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., 25032935524 + 2749953600 = 158218^2 + 52440^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 291694 + ... + 375034.

Almost surely, 2^27782889124 is an apocalyptic number.

27782889124 is the 166682-nd square number.

It is an amenable number.

27782889124 is a deficient number, since it is larger than the sum of its proper divisors (20837750237).

27782889124 is an frugal number, since it uses more digits than its factorization.

27782889124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166686 (or 83343 counting only the distinct ones).

The product of its digits is 7225344, while the sum is 58.

The spelling of 27782889124 in words is "twenty-seven billion, seven hundred eighty-two million, eight hundred eighty-nine thousand, one hundred twenty-four".