113245220 has 24 divisors (see below), whose sum is σ = 259435008. Its totient is φ = 41180000.

The previous prime is 113245217. The next prime is 113245243. The reversal of 113245220 is 22542311.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 113245192 and 113245201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257156 + ... + 257595.

It is an arithmetic number, because the mean of its divisors is an integer number (10809792).

Almost surely, 2^113245220 is an apocalyptic number.

113245220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113245220 is an abundant number, since it is smaller than the sum of its proper divisors (146189788).

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

113245220 is a wasteful number, since it uses less digits than its factorization.

113245220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514771 (or 514769 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 113245220 is about 10641.6737405354. The cubic root of 113245220 is about 483.8082761799.

Adding to 113245220 its reverse (22542311), we get a palindrome (135787531).

The spelling of 113245220 in words is "one hundred thirteen million, two hundred forty-five thousand, two hundred twenty".