117217650 has 96 divisors (see below), whose sum is σ = 333907200. Its totient is φ = 26913600.

The previous prime is 117217643. The next prime is 117217651. The reversal of 117217650 is 56712711.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (117217651) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29481 + ... + 33219.

It is an arithmetic number, because the mean of its divisors is an integer number (3478200).

Almost surely, 2^117217650 is an apocalyptic number.

117217650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 117217650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166953600).

117217650 is an abundant number, since it is smaller than the sum of its proper divisors (216689550).

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

117217650 is a wasteful number, since it uses less digits than its factorization.

117217650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3784 (or 3779 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 30.

The square root of 117217650 is about 10826.7100265963. The cubic root of 117217650 is about 489.4004189286.

The spelling of 117217650 in words is "one hundred seventeen million, two hundred seventeen thousand, six hundred fifty".