117428922 has 48 divisors (see below), whose sum is σ = 276487848. Its totient is φ = 35804160.

The previous prime is 117428903. The next prime is 117428923. The reversal of 117428922 is 229824711.

It can be written as a sum of positive squares in 4 ways, for example, as 37344321 + 80084601 = 6111^2 + 8949^2 .

It is not an unprimeable number, because it can be changed into a prime (117428923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24222 + ... + 28662.

Almost surely, 2^117428922 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117428922, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138243924).

117428922 is an abundant number, since it is smaller than the sum of its proper divisors (159058926).

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

117428922 is a wasteful number, since it uses less digits than its factorization.

117428922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4575 (or 4572 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 117428922 is about 10836.4626147097. The cubic root of 117428922 is about 489.6942727043.

The spelling of 117428922 in words is "one hundred seventeen million, four hundred twenty-eight thousand, nine hundred twenty-two".