117597312 has 128 divisors (see below), whose sum is σ = 396739200. Its totient is φ = 33592320.

The previous prime is 117597299. The next prime is 117597317. The reversal of 117597312 is 213795711.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117597317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21762 + ... + 26622.

It is an arithmetic number, because the mean of its divisors is an integer number (3099525).

Almost surely, 2^117597312 is an apocalyptic number.

117597312 is a gapful number since it is divisible by the number (12) 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 117597312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198369600).

117597312 is an abundant number, since it is smaller than the sum of its proper divisors (279141888).

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

117597312 is an equidigital number, since it uses as much as digits as its factorization.

117597312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4891 (or 4873 counting only the distinct ones).

The product of its digits is 13230, while the sum is 36.

The square root of 117597312 is about 10844.2294332055. The cubic root of 117597312 is about 489.9282304992.

The spelling of 117597312 in words is "one hundred seventeen million, five hundred ninety-seven thousand, three hundred twelve".