117712170 has 64 divisors (see below), whose sum is σ = 322410240. Its totient is φ = 30538944.

The previous prime is 117712169. The next prime is 117712171. The reversal of 117712170 is 71217711.

It is an interprime number because it is at equal distance from previous prime (117712169) and next prime (117712171).

It is a super-2 number, since 2×117712170² = 27712309932217800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (117712171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4099 + ... + 15881.

It is an arithmetic number, because the mean of its divisors is an integer number (5037660).

Almost surely, 2^117712170 is an apocalyptic number.

117712170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 117712170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161205120).

117712170 is an abundant number, since it is smaller than the sum of its proper divisors (204698070).

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

117712170 is a wasteful number, since it uses less digits than its factorization.

117712170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11836 (or 11830 counting only the distinct ones).

The product of its (nonzero) digits is 686, while the sum is 27.

The square root of 117712170 is about 10849.5239526903. The cubic root of 117712170 is about 490.0876838779.

Adding to 117712170 its reverse (71217711), we get a palindrome (188929881).

The spelling of 117712170 in words is "one hundred seventeen million, seven hundred twelve thousand, one hundred seventy".