117971216 has 40 divisors (see below), whose sum is σ = 254073024. Its totient is φ = 52607360.

The previous prime is 117971201. The next prime is 117971221. The reversal of 117971216 is 612179711.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3005 + ... + 15651.

Almost surely, 2^117971216 is an apocalyptic number.

117971216 is a gapful number since it is divisible by the number (16) 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 117971216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127036512).

117971216 is an abundant number, since it is smaller than the sum of its proper divisors (136101808).

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

117971216 is a wasteful number, since it uses less digits than its factorization.

117971216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12719 (or 12713 counting only the distinct ones).

The product of its digits is 5292, while the sum is 35.

The square root of 117971216 is about 10861.4555194044. The cubic root of 117971216 is about 490.4469280661.

The spelling of 117971216 in words is "one hundred seventeen million, nine hundred seventy-one thousand, two hundred sixteen".