117271980 has 144 divisors (see below), whose sum is σ = 409753344. Its totient is φ = 26593920.

The previous prime is 117271961. The next prime is 117271997. The reversal of 117271980 is 89172711.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 205095 + ... + 205665.

Almost surely, 2^117271980 is an apocalyptic number.

117271980 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 117271980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204876672).

117271980 is an abundant number, since it is smaller than the sum of its proper divisors (292481364).

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

117271980 is a wasteful number, since it uses less digits than its factorization.

117271980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756 (or 751 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 36.

The square root of 117271980 is about 10829.2188083906. The cubic root of 117271980 is about 489.4760190845.

The spelling of 117271980 in words is "one hundred seventeen million, two hundred seventy-one thousand, nine hundred eighty".