117617172 has 12 divisors (see below), whose sum is σ = 274440096. Its totient is φ = 39205720.

The previous prime is 117617167. The next prime is 117617179. The reversal of 117617172 is 271716711.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117617179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4900704 + ... + 4900727.

It is an arithmetic number, because the mean of its divisors is an integer number (22870008).

Almost surely, 2^117617172 is an apocalyptic number.

117617172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

117617172 is an abundant number, since it is smaller than the sum of its proper divisors (156822924).

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

117617172 is a wasteful number, since it uses less digits than its factorization.

117617172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9801438 (or 9801436 counting only the distinct ones).

The product of its digits is 4116, while the sum is 33.

The square root of 117617172 is about 10845.1450889327. The cubic root of 117617172 is about 489.9558088705.

The spelling of 117617172 in words is "one hundred seventeen million, six hundred seventeen thousand, one hundred seventy-two".