27747684328 has 96 divisors (see below), whose sum is σ = 65252635560. Its totient is φ = 10964298240.

The previous prime is 27747684323. The next prime is 27747684337. The reversal of 27747684328 is 82348674772.

It can be written as a sum of positive squares in 4 ways, for example, as 26844200964 + 903483364 = 163842^2 + 30058^2 .

It is not an unprimeable number, because it can be changed into a prime (27747684323) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 5200350 + ... + 5205682.

Almost surely, 2^27747684328 is an apocalyptic number.

27747684328 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27747684328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32626317780).

27747684328 is an abundant number, since it is smaller than the sum of its proper divisors (37504951232).

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

27747684328 is a wasteful number, since it uses less digits than its factorization.

27747684328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6387 (or 6376 counting only the distinct ones).

The product of its digits is 25288704, while the sum is 58.

The spelling of 27747684328 in words is "twenty-seven billion, seven hundred forty-seven million, six hundred eighty-four thousand, three hundred twenty-eight".