117597840 has 320 divisors, whose sum is σ = 427472640. Its totient is φ = 26542080.

The previous prime is 117597829. The next prime is 117597841. The reversal of 117597840 is 48795711.

It is a junction number, because it is equal to n+sod(n) for n = 117597792 and 117597801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117597841) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2868220 + ... + 2868260.

It is an arithmetic number, because the mean of its divisors is an integer number (1335852).

Almost surely, 2^117597840 is an apocalyptic number.

117597840 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 117597840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213736320).

117597840 is an abundant number, since it is smaller than the sum of its proper divisors (309874800).

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

117597840 is a wasteful number, since it uses less digits than its factorization.

117597840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 42.

The square root of 117597840 is about 10844.2537779231. The cubic root of 117597840 is about 489.9289637408.

The spelling of 117597840 in words is "one hundred seventeen million, five hundred ninety-seven thousand, eight hundred forty".