117621912 has 64 divisors (see below), whose sum is σ = 322120800. Its totient is φ = 35624960.

The previous prime is 117621877. The next prime is 117621919. The reversal of 117621912 is 219126711.

It is a self number, because there is not a number n which added to its sum of digits gives 117621912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117621919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6862 + ... + 16802.

Almost surely, 2^117621912 is an apocalyptic number.

117621912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117621912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161060400).

117621912 is an abundant number, since it is smaller than the sum of its proper divisors (204498888).

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

117621912 is a wasteful number, since it uses less digits than its factorization.

117621912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9996 (or 9992 counting only the distinct ones).

The product of its digits is 1512, while the sum is 30.

The square root of 117621912 is about 10845.3636176940. The cubic root of 117621912 is about 489.9623905606.

The spelling of 117621912 in words is "one hundred seventeen million, six hundred twenty-one thousand, nine hundred twelve".