113720805 has 24 divisors (see below), whose sum is σ = 215036640. Its totient is φ = 55137120.

The previous prime is 113720801. The next prime is 113720807. The reversal of 113720805 is 508027311.

It is not a de Polignac number, because 113720805 - 2² = 113720801 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113720801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 114375 + ... + 115364.

It is an arithmetic number, because the mean of its divisors is an integer number (8959860).

Almost surely, 2^113720805 is an apocalyptic number.

113720805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

113720805 is a deficient number, since it is larger than the sum of its proper divisors (101315835).

113720805 is a wasteful number, since it uses less digits than its factorization.

113720805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229761 (or 229758 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 113720805 is about 10663.9957333075. The cubic root of 113720805 is about 484.4845979122.

The spelling of 113720805 in words is "one hundred thirteen million, seven hundred twenty thousand, eight hundred five".