117641640 has 64 divisors (see below), whose sum is σ = 353808000. Its totient is φ = 31292672.

The previous prime is 117641639. The next prime is 117641653. The reversal of 117641640 is 46146711.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 117641598 and 117641607.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59386 + ... + 61334.

It is an arithmetic number, because the mean of its divisors is an integer number (5528250).

Almost surely, 2^117641640 is an apocalyptic number.

117641640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117641640 is an abundant number, since it is smaller than the sum of its proper divisors (236166360).

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

117641640 is a wasteful number, since it uses less digits than its factorization.

117641640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2466 (or 2462 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 117641640 is about 10846.2730926342. The cubic root of 117641640 is about 489.9897818222.

The spelling of 117641640 in words is "one hundred seventeen million, six hundred forty-one thousand, six hundred forty".