127317640 has 16 divisors (see below), whose sum is σ = 286464780. Its totient is φ = 50927040.

The previous prime is 127317637. The next prime is 127317647. The reversal of 127317640 is 46713721.

It can be written as a sum of positive squares in 2 ways, for example, as 115906756 + 11410884 = 10766^2 + 3378^2 .

It is not an unprimeable number, because it can be changed into a prime (127317647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1591431 + ... + 1591510.

Almost surely, 2^127317640 is an apocalyptic number.

127317640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

127317640 is an abundant number, since it is smaller than the sum of its proper divisors (159147140).

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

127317640 is a wasteful number, since it uses less digits than its factorization.

127317640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3182952 (or 3182948 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 127317640 is about 11283.5118646634. The cubic root of 127317640 is about 503.0712824868.

The spelling of 127317640 in words is "one hundred twenty-seven million, three hundred seventeen thousand, six hundred forty".