113261440 has 64 divisors (see below), whose sum is σ = 278141760. Its totient is φ = 44070912.

The previous prime is 113261437. The next prime is 113261461. The reversal of 113261440 is 44162311.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21289 + ... + 26071.

It is an arithmetic number, because the mean of its divisors is an integer number (4345965).

Almost surely, 2^113261440 is an apocalyptic number.

113261440 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 113261440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139070880).

113261440 is an abundant number, since it is smaller than the sum of its proper divisors (164880320).

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

113261440 is an equidigital number, since it uses as much as digits as its factorization.

113261440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4839 (or 4827 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 113261440 is about 10642.4358114108. The cubic root of 113261440 is about 483.8313735363.

The spelling of 113261440 in words is "one hundred thirteen million, two hundred sixty-one thousand, four hundred forty".