117220172 has 12 divisors (see below), whose sum is σ = 205217376. Its totient is φ = 58586640.

The previous prime is 117220163. The next prime is 117220183. The reversal of 117220172 is 271022711.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10397 + ... + 18507.

It is an arithmetic number, because the mean of its divisors is an integer number (17101448).

Almost surely, 2^117220172 is an apocalyptic number.

It is an amenable number.

117220172 is a deficient number, since it is larger than the sum of its proper divisors (87997204).

117220172 is a wasteful number, since it uses less digits than its factorization.

117220172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11728 (or 11726 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 23.

The square root of 117220172 is about 10826.8264971782. The cubic root of 117220172 is about 489.4039288068.

Adding to 117220172 its reverse (271022711), we get a palindrome (388242883).

The spelling of 117220172 in words is "one hundred seventeen million, two hundred twenty thousand, one hundred seventy-two".