127006640 has 40 divisors (see below), whose sum is σ = 310835760. Its totient is φ = 48128256.

The previous prime is 127006639. The next prime is 127006657. The reversal of 127006640 is 46600721.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×127006640² = 32261373208179200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40259 + ... + 43298.

It is an arithmetic number, because the mean of its divisors is an integer number (7770894).

Almost surely, 2^127006640 is an apocalyptic number.

127006640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

127006640 is an abundant number, since it is smaller than the sum of its proper divisors (183829120).

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

127006640 is a wasteful number, since it uses less digits than its factorization.

127006640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83589 (or 83583 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 127006640 is about 11269.7222680952. The cubic root of 127006640 is about 502.6613295180.

The spelling of 127006640 in words is "one hundred twenty-seven million, six thousand, six hundred forty".