127981560 has 128 divisors (see below), whose sum is σ = 442137600. Its totient is φ = 29030400.

The previous prime is 127981537. The next prime is 127981573. The reversal of 127981560 is 65189721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 126336 + ... + 127344.

It is an arithmetic number, because the mean of its divisors is an integer number (3454200).

Almost surely, 2^127981560 is an apocalyptic number.

127981560 is a gapful number since it is divisible by the number (10) 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 127981560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221068800).

127981560 is an abundant number, since it is smaller than the sum of its proper divisors (314156040).

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

127981560 is a wasteful number, since it uses less digits than its factorization.

127981560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181 (or 1177 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 39.

The square root of 127981560 is about 11312.8935290667. The cubic root of 127981560 is about 503.9442178122.

The spelling of 127981560 in words is "one hundred twenty-seven million, nine hundred eighty-one thousand, five hundred sixty".