113888638 has 4 divisors (see below), whose sum is σ = 170832960. Its totient is φ = 56944318.

The previous prime is 113888633. The next prime is 113888653. The reversal of 113888638 is 836888311.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113888633) 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 as a sum of consecutive naturals, namely, 28472158 + ... + 28472161.

It is an arithmetic number, because the mean of its divisors is an integer number (42708240).

Almost surely, 2^113888638 is an apocalyptic number.

113888638 is a deficient number, since it is larger than the sum of its proper divisors (56944322).

113888638 is an equidigital number, since it uses as much as digits as its factorization.

113888638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56944321.

The product of its digits is 221184, while the sum is 46.

The square root of 113888638 is about 10671.8619743698. The cubic root of 113888638 is about 484.7228203291.

The spelling of 113888638 in words is "one hundred thirteen million, eight hundred eighty-eight thousand, six hundred thirty-eight".