113981620 has 12 divisors (see below), whose sum is σ = 239361444. Its totient is φ = 45592640.

The previous prime is 113981603. The next prime is 113981653. The reversal of 113981620 is 26189311.

It can be written as a sum of positive squares in 2 ways, for example, as 86229796 + 27751824 = 9286^2 + 5268^2 .

It is a congruent number.

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, 2849521 + ... + 2849560.

It is an arithmetic number, because the mean of its divisors is an integer number (19946787).

Almost surely, 2^113981620 is an apocalyptic number.

113981620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113981620 is an abundant number, since it is smaller than the sum of its proper divisors (125379824).

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

113981620 is a wasteful number, since it uses less digits than its factorization.

113981620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5699090 (or 5699088 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 113981620 is about 10676.2174949745. The cubic root of 113981620 is about 484.8546983871.

The spelling of 113981620 in words is "one hundred thirteen million, nine hundred eighty-one thousand, six hundred twenty".