113443020 has 72 divisors (see below), whose sum is σ = 346194576. Its totient is φ = 30068352.

The previous prime is 113442991. The next prime is 113443021. The reversal of 113443020 is 20344311.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 113442984 and 113443002.

It is not an unprimeable number, because it can be changed into a prime (113443021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29319 + ... + 32961.

It is an arithmetic number, because the mean of its divisors is an integer number (4808258).

Almost surely, 2^113443020 is an apocalyptic number.

113443020 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 113443020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173097288).

113443020 is an abundant number, since it is smaller than the sum of its proper divisors (232751556).

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

113443020 is a wasteful number, since it uses less digits than its factorization.

113443020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3831 (or 3826 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 113443020 is about 10650.9633367128. The cubic root of 113443020 is about 484.0897939176.

Adding to 113443020 its reverse (20344311), we get a palindrome (133787331).

The spelling of 113443020 in words is "one hundred thirteen million, four hundred forty-three thousand, twenty".