113405556 has 72 divisors (see below), whose sum is σ = 294672672. Its totient is φ = 33915200.

The previous prime is 113405503. The next prime is 113405561. The reversal of 113405556 is 655504311.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 120046 + ... + 120986.

It is an arithmetic number, because the mean of its divisors is an integer number (4092676).

Almost surely, 2^113405556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 113405556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147336336).

113405556 is an abundant number, since it is smaller than the sum of its proper divisors (181267116).

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

113405556 is a wasteful number, since it uses less digits than its factorization.

113405556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053 (or 1040 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 113405556 is about 10649.2044773307. The cubic root of 113405556 is about 484.0364986250.

Adding to 113405556 its reverse (655504311), we get a palindrome (768909867).

The spelling of 113405556 in words is "one hundred thirteen million, four hundred five thousand, five hundred fifty-six".