117878784 has 104 divisors (see below), whose sum is σ = 322004592. Its totient is φ = 38338560.

The previous prime is 117878777. The next prime is 117878791. The reversal of 117878784 is 487878711.

It is an interprime number because it is at equal distance from previous prime (117878777) and next prime (117878791).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 651174 + ... + 651354.

It is an arithmetic number, because the mean of its divisors is an integer number (3096198).

Almost surely, 2^117878784 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 117878784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161002296).

117878784 is an abundant number, since it is smaller than the sum of its proper divisors (204125808).

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

117878784 is an equidigital number, since it uses as much as digits as its factorization.

117878784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261 (or 239 counting only the distinct ones).

The product of its digits is 702464, while the sum is 51.

The square root of 117878784 is about 10857.1996389493. The cubic root of 117878784 is about 490.3188040575.

The spelling of 117878784 in words is "one hundred seventeen million, eight hundred seventy-eight thousand, seven hundred eighty-four".