117956205 has 24 divisors (see below), whose sum is σ = 207342720. Its totient is φ = 62022240.

The previous prime is 117956191. The next prime is 117956207. The reversal of 117956205 is 502659711.

It is not a de Polignac number, because 117956205 - 2⁵ = 117956173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 117956205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117956207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15265 + ... + 21654.

It is an arithmetic number, because the mean of its divisors is an integer number (8639280).

Almost surely, 2^117956205 is an apocalyptic number.

117956205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

117956205 is a deficient number, since it is larger than the sum of its proper divisors (89386515).

117956205 is a wasteful number, since it uses less digits than its factorization.

117956205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37001 (or 36998 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 36.

The square root of 117956205 is about 10860.7644758553. The cubic root of 117956205 is about 490.4261252201.

The spelling of 117956205 in words is "one hundred seventeen million, nine hundred fifty-six thousand, two hundred five".