127315720 has 96 divisors (see below), whose sum is σ = 352923480. Its totient is φ = 41072640.

The previous prime is 127315697. The next prime is 127315739. The reversal of 127315720 is 27513721.

It can be written as a sum of positive squares in 4 ways, for example, as 126382564 + 933156 = 11242^2 + 966^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31410 + ... + 35230.

Almost surely, 2^127315720 is an apocalyptic number.

127315720 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 127315720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176461740).

127315720 is an abundant number, since it is smaller than the sum of its proper divisors (225607760).

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

127315720 is a wasteful number, since it uses less digits than its factorization.

127315720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3863 (or 3852 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 127315720 is about 11283.4267844481. The cubic root of 127315720 is about 503.0687536366.

The spelling of 127315720 in words is "one hundred twenty-seven million, three hundred fifteen thousand, seven hundred twenty".