113989820 has 24 divisors (see below), whose sum is σ = 273575904. Its totient is φ = 39082176.

The previous prime is 113989801. The next prime is 113989823. The reversal of 113989820 is 28989311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113989823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 406967 + ... + 407246.

It is an arithmetic number, because the mean of its divisors is an integer number (11398996).

Almost surely, 2^113989820 is an apocalyptic number.

113989820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113989820 is an abundant number, since it is smaller than the sum of its proper divisors (159586084).

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

113989820 is a wasteful number, since it uses less digits than its factorization.

113989820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814229 (or 814227 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 113989820 is about 10676.6015192101. The cubic root of 113989820 is about 484.8663251540.

The spelling of 113989820 in words is "one hundred thirteen million, nine hundred eighty-nine thousand, eight hundred twenty".