113747821 has 8 divisors (see below), whose sum is σ = 124776288. Its totient is φ = 102834000.

The previous prime is 113747807. The next prime is 113747839. The reversal of 113747821 is 128747311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 113747821 - 2⁵ = 113747789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113747891) 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 7 ways as a sum of consecutive naturals, for example, 26575 + ... + 30556.

It is an arithmetic number, because the mean of its divisors is an integer number (15597036).

Almost surely, 2^113747821 is an apocalyptic number.

113747821 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

113747821 is a deficient number, since it is larger than the sum of its proper divisors (11028467).

113747821 is a wasteful number, since it uses less digits than its factorization.

113747821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57323.

The product of its digits is 9408, while the sum is 34.

The square root of 113747821 is about 10665.2623502659. The cubic root of 113747821 is about 484.5229602845.

The spelling of 113747821 in words is "one hundred thirteen million, seven hundred forty-seven thousand, eight hundred twenty-one".