117905298 has 64 divisors (see below), whose sum is σ = 287815680. Its totient is φ = 31449600.

The previous prime is 117905287. The next prime is 117905357. The reversal of 117905298 is 892509711.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55618 + ... + 57698.

It is an arithmetic number, because the mean of its divisors is an integer number (4497120).

Almost surely, 2^117905298 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117905298, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143907840).

117905298 is an abundant number, since it is smaller than the sum of its proper divisors (169910382).

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

117905298 is a wasteful number, since it uses less digits than its factorization.

117905298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2183.

The product of its (nonzero) digits is 45360, while the sum is 42.

The square root of 117905298 is about 10858.4206033843. The cubic root of 117905298 is about 490.3555631127.

The spelling of 117905298 in words is "one hundred seventeen million, nine hundred five thousand, two hundred ninety-eight".