113440 has 24 divisors (see below), whose sum is σ = 268380. Its totient is φ = 45312.

The previous prime is 113437. The next prime is 113453. The reversal of 113440 is 44311.

It can be written as a sum of positive squares in 2 ways, for example, as 104976 + 8464 = 324^2 + 92^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 113440.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195 + ... + 514.

2¹¹³⁴⁴⁰ is an apocalyptic number.

113440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113440 is an abundant number, since it is smaller than the sum of its proper divisors (154940).

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

113440 is an equidigital number, since it uses as much as digits as its factorization.

113440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724 (or 716 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 113440 is about 336.8085509603. The cubic root of 113440 is about 48.4085498181.

Adding to 113440 its reverse (44311), we get a palindrome (157751).

The spelling of 113440 in words is "one hundred thirteen thousand, four hundred forty".