117761880 has 128 divisors (see below), whose sum is σ = 364654080. Its totient is φ = 30412800.

The previous prime is 117761869. The next prime is 117761899. The reversal of 117761880 is 88167711.

It is a super-2 number, since 2×117761880² = 27735720762268800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 779805 + ... + 779955.

It is an arithmetic number, because the mean of its divisors is an integer number (2848860).

Almost surely, 2^117761880 is an apocalyptic number.

117761880 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 117761880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182327040).

117761880 is an abundant number, since it is smaller than the sum of its proper divisors (246892200).

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

117761880 is a wasteful number, since it uses less digits than its factorization.

117761880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329 (or 325 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 39.

The square root of 117761880 is about 10851.8145948039. The cubic root of 117761880 is about 490.1566623876.

The spelling of 117761880 in words is "one hundred seventeen million, seven hundred sixty-one thousand, eight hundred eighty".