117218502 has 80 divisors (see below), whose sum is σ = 287286912. Its totient is φ = 35562240.

The previous prime is 117218501. The next prime is 117218539. The reversal of 117218502 is 205812711.

It is a super-2 number, since 2×117218502² = 27480354422248008, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117218501) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 84688 + ... + 86060.

Almost surely, 2^117218502 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117218502, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143643456).

117218502 is an abundant number, since it is smaller than the sum of its proper divisors (170068410).

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

117218502 is a wasteful number, since it uses less digits than its factorization.

117218502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1435 (or 1426 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 117218502 is about 10826.7493736578. The cubic root of 117218502 is about 489.4016046663.

The spelling of 117218502 in words is "one hundred seventeen million, two hundred eighteen thousand, five hundred two".