117372720 has 40 divisors (see below), whose sum is σ = 363856176. Its totient is φ = 31299328.

The previous prime is 117372701. The next prime is 117372767. The reversal of 117372720 is 27273711.

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

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

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, 244287 + ... + 244766.

Almost surely, 2^117372720 is an apocalyptic number.

117372720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117372720 is an abundant number, since it is smaller than the sum of its proper divisors (246483456).

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

117372720 is a wasteful number, since it uses less digits than its factorization.

117372720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489069 (or 489063 counting only the distinct ones).

The product of its (nonzero) digits is 4116, while the sum is 30.

The square root of 117372720 is about 10833.8691149561. The cubic root of 117372720 is about 489.6161369580.

Subtracting from 117372720 its reverse (27273711), we obtain a palindrome (90099009).

The spelling of 117372720 in words is "one hundred seventeen million, three hundred seventy-two thousand, seven hundred twenty".