27720839232 has 84 divisors (see below), whose sum is σ = 82196719020. Its totient is φ = 8921644032.

The previous prime is 27720839231. The next prime is 27720839297. The reversal of 27720839232 is 23293802772.

27720839232 is a `hidden beast` number, since 27 + 7 + 208 + 392 + 32 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4924670976 + 22796168256 = 70176^2 + 150984^2 .

It is not an unprimeable number, because it can be changed into a prime (27720839231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 813063 + ... + 846470.

Almost surely, 2^27720839232 is an apocalyptic number.

It is an amenable number.

27720839232 is an abundant number, since it is smaller than the sum of its proper divisors (54475879788).

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

27720839232 is a wasteful number, since it uses less digits than its factorization.

27720839232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1659580 (or 1659567 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The spelling of 27720839232 in words is "twenty-seven billion, seven hundred twenty million, eight hundred thirty-nine thousand, two hundred thirty-two".