113918220 has 144 divisors (see below), whose sum is σ = 377002080. Its totient is φ = 27675648.

The previous prime is 113918219. The next prime is 113918221. The reversal of 113918220 is 22819311.

It is an interprime number because it is at equal distance from previous prime (113918219) and next prime (113918221).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113918221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 207987 + ... + 208533.

It is an arithmetic number, because the mean of its divisors is an integer number (2618070).

Almost surely, 2^113918220 is an apocalyptic number.

113918220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 113918220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188501040).

113918220 is an abundant number, since it is smaller than the sum of its proper divisors (263083860).

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

113918220 is a wasteful number, since it uses less digits than its factorization.

113918220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664 (or 659 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 113918220 is about 10673.2478655749. The cubic root of 113918220 is about 484.7647847995.

The spelling of 113918220 in words is "one hundred thirteen million, nine hundred eighteen thousand, two hundred twenty".