113217858 has 128 divisors (see below), whose sum is σ = 293932800. Its totient is φ = 31988736.

The previous prime is 113217821. The next prime is 113217887. The reversal of 113217858 is 858712311.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 632413 + ... + 632591.

It is an arithmetic number, because the mean of its divisors is an integer number (2296350).

Almost surely, 2^113217858 is an apocalyptic number.

113217858 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 113217858, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146966400).

113217858 is an abundant number, since it is smaller than the sum of its proper divisors (180714942).

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

113217858 is a wasteful number, since it uses less digits than its factorization.

113217858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273 (or 267 counting only the distinct ones).

The product of its digits is 13440, while the sum is 36.

The square root of 113217858 is about 10640.3880568333. The cubic root of 113217858 is about 483.7693075642.

The spelling of 113217858 in words is "one hundred thirteen million, two hundred seventeen thousand, eight hundred fifty-eight".