113521856 has 56 divisors (see below), whose sum is σ = 259445760. Its totient is φ = 48275712.

The previous prime is 113521853. The next prime is 113521861. The reversal of 113521856 is 658125311.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (113521853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61361 + ... + 63183.

It is an arithmetic number, because the mean of its divisors is an integer number (4632960).

Almost surely, 2^113521856 is an apocalyptic number.

113521856 is a gapful number since it is divisible by the number (16) 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 113521856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129722880).

113521856 is an abundant number, since it is smaller than the sum of its proper divisors (145923904).

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

113521856 is a wasteful number, since it uses less digits than its factorization.

113521856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1981 (or 1971 counting only the distinct ones).

The product of its digits is 7200, while the sum is 32.

The square root of 113521856 is about 10654.6635798602. The cubic root of 113521856 is about 484.2019056071.

The spelling of 113521856 in words is "one hundred thirteen million, five hundred twenty-one thousand, eight hundred fifty-six".