27974671320 has 128 divisors (see below), whose sum is σ = 84548448000. Its totient is φ = 7404572160.

The previous prime is 27974671271. The next prime is 27974671367. The reversal of 27974671320 is 2317647972.

It is a self number, because there is not a number n which added to its sum of digits gives 27974671320.

It is a congruent 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 31 ways as a sum of consecutive naturals, for example, 17806135 + ... + 17807705.

It is an arithmetic number, because the mean of its divisors is an integer number (660534750).

Almost surely, 2^27974671320 is an apocalyptic number.

27974671320 is a gapful number since it is divisible by the number (20) 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 27974671320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42274224000).

27974671320 is an abundant number, since it is smaller than the sum of its proper divisors (56573776680).

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

27974671320 is a wasteful number, since it uses less digits than its factorization.

27974671320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2593 (or 2589 counting only the distinct ones).

The product of its (nonzero) digits is 889056, while the sum is 48.

The spelling of 27974671320 in words is "twenty-seven billion, nine hundred seventy-four million, six hundred seventy-one thousand, three hundred twenty".