117220164 has 12 divisors (see below), whose sum is σ = 273513744. Its totient is φ = 39073384.

The previous prime is 117220163. The next prime is 117220183. The reversal of 117220164 is 461022711.

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

It is not an unprimeable number, because it can be changed into a prime (117220163) 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, 4884162 + ... + 4884185.

It is an arithmetic number, because the mean of its divisors is an integer number (22792812).

Almost surely, 2^117220164 is an apocalyptic number.

It is an amenable number.

117220164 is an abundant number, since it is smaller than the sum of its proper divisors (156293580).

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

117220164 is a wasteful number, since it uses less digits than its factorization.

117220164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9768354 (or 9768352 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 117220164 is about 10826.8261277255. The cubic root of 117220164 is about 489.4039176732.

Adding to 117220164 its reverse (461022711), we get a palindrome (578242875).

The spelling of 117220164 in words is "one hundred seventeen million, two hundred twenty thousand, one hundred sixty-four".