117860638 has 16 divisors (see below), whose sum is σ = 205064064. Its totient is φ = 49757400.

The previous prime is 117860599. The next prime is 117860641. The reversal of 117860638 is 836068711.

It is a super-2 number, since 2×117860638² = 27782259979534088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 117860638.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 61888 + ... + 63763.

It is an arithmetic number, because the mean of its divisors is an integer number (12816504).

Almost surely, 2^117860638 is an apocalyptic number.

117860638 is a deficient number, since it is larger than the sum of its proper divisors (87203426).

117860638 is a wasteful number, since it uses less digits than its factorization.

117860638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125727.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 117860638 is about 10856.3639401044. The cubic root of 117860638 is about 490.2936432347.

It can be divided in two parts, 1178 and 60638, that added together give a palindrome (61816).

The spelling of 117860638 in words is "one hundred seventeen million, eight hundred sixty thousand, six hundred thirty-eight".