113820820 has 12 divisors (see below), whose sum is σ = 239023764. Its totient is φ = 45528320.

The previous prime is 113820803. The next prime is 113820821. The reversal of 113820820 is 28028311.

It can be written as a sum of positive squares in 2 ways, for example, as 20466576 + 93354244 = 4524^2 + 9662^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113820821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2845501 + ... + 2845540.

It is an arithmetic number, because the mean of its divisors is an integer number (19918647).

Almost surely, 2^113820820 is an apocalyptic number.

113820820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113820820 is an abundant number, since it is smaller than the sum of its proper divisors (125202944).

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

113820820 is a wasteful number, since it uses less digits than its factorization.

113820820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5691050 (or 5691048 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 113820820 is about 10668.6840800541. The cubic root of 113820820 is about 484.6265875530.

The spelling of 113820820 in words is "one hundred thirteen million, eight hundred twenty thousand, eight hundred twenty".