113517820 has 24 divisors (see below), whose sum is σ = 256725504. Its totient is φ = 41914176.

The previous prime is 113517797. The next prime is 113517821. The reversal of 113517820 is 28715311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113517821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218044 + ... + 218563.

It is an arithmetic number, because the mean of its divisors is an integer number (10696896).

Almost surely, 2^113517820 is an apocalyptic number.

113517820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113517820 is an abundant number, since it is smaller than the sum of its proper divisors (143207684).

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

113517820 is a wasteful number, since it uses less digits than its factorization.

113517820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436629 (or 436627 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 113517820 is about 10654.4741775463. The cubic root of 113517820 is about 484.1961673228.

The spelling of 113517820 in words is "one hundred thirteen million, five hundred seventeen thousand, eight hundred twenty".