117440720 has 80 divisors (see below), whose sum is σ = 284981760. Its totient is φ = 44954112.

The previous prime is 117440711. The next prime is 117440759. The reversal of 117440720 is 27044711.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 117440720.

It is a congruent number.

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, 517247 + ... + 517473.

It is an arithmetic number, because the mean of its divisors is an integer number (3562272).

Almost surely, 2^117440720 is an apocalyptic number.

117440720 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 117440720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142490880).

117440720 is an abundant number, since it is smaller than the sum of its proper divisors (167541040).

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

117440720 is a wasteful number, since it uses less digits than its factorization.

117440720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492 (or 486 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 117440720 is about 10837.0069668705. The cubic root of 117440720 is about 489.7106718998.

The spelling of 117440720 in words is "one hundred seventeen million, four hundred forty thousand, seven hundred twenty".