113122620 has 144 divisors (see below), whose sum is σ = 382505760. Its totient is φ = 26869248.

The previous prime is 113122613. The next prime is 113122643. The reversal of 113122620 is 26221311.

113122620 is a `hidden beast` number, since 11 + 31 + 2 + 2 + 620 = 666.

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 = 113122593 and 113122602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 67027 + ... + 68693.

It is an arithmetic number, because the mean of its divisors is an integer number (2656290).

Almost surely, 2^113122620 is an apocalyptic number.

113122620 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 113122620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191252880).

113122620 is an abundant number, since it is smaller than the sum of its proper divisors (269383140).

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

113122620 is a wasteful number, since it uses less digits than its factorization.

113122620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1724 (or 1719 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 113122620 is about 10635.9118085851. The cubic root of 113122620 is about 483.6336218253.

Adding to 113122620 its reverse (26221311), we get a palindrome (139343931).

The spelling of 113122620 in words is "one hundred thirteen million, one hundred twenty-two thousand, six hundred twenty".