117961320 has 64 divisors (see below), whose sum is σ = 355904640. Its totient is φ = 31276800.

The previous prime is 117961309. The next prime is 117961331. The reversal of 117961320 is 23169711.

It is a Cunningham number, because it is equal to 10861²-1.

It is an interprime number because it is at equal distance from previous prime (117961309) and next prime (117961331).

It is a super-2 number, since 2×117961320² = 27829746032284800, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 19005 + ... + 24435.

It is an arithmetic number, because the mean of its divisors is an integer number (5561010).

Almost surely, 2^117961320 is an apocalyptic number.

117961320 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 117961320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177952320).

117961320 is an abundant number, since it is smaller than the sum of its proper divisors (237943320).

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

117961320 is a wasteful number, since it uses less digits than its factorization.

117961320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5626 (or 5622 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 117961320 is about 10860.9999539637. Note that the first 4 decimals coincide. The cubic root of 117961320 is about 490.4332139905.

The spelling of 117961320 in words is "one hundred seventeen million, nine hundred sixty-one thousand, three hundred twenty".