117197808 has 120 divisors (see below), whose sum is σ = 379381968. Its totient is φ = 30901248.

The previous prime is 117197771. The next prime is 117197809. The reversal of 117197808 is 808791711.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 117197808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117197809) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28660 + ... + 32492.

Almost surely, 2^117197808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117197808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189690984).

117197808 is an abundant number, since it is smaller than the sum of its proper divisors (262184160).

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

117197808 is a wasteful number, since it uses less digits than its factorization.

117197808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3871 (or 3858 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 42.

The square root of 117197808 is about 10825.7936429622. The cubic root of 117197808 is about 489.3728029763.

The spelling of 117197808 in words is "one hundred seventeen million, one hundred ninety-seven thousand, eight hundred eight".