115392638 has 4 divisors (see below), whose sum is σ = 173088960. Its totient is φ = 57696318.

The previous prime is 115392611. The next prime is 115392647. The reversal of 115392638 is 836293511.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 28848158 + ... + 28848161.

It is an arithmetic number, because the mean of its divisors is an integer number (43272240).

Almost surely, 2^115392638 is an apocalyptic number.

115392638 is a deficient number, since it is larger than the sum of its proper divisors (57696322).

115392638 is an equidigital number, since it uses as much as digits as its factorization.

115392638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57696321.

The product of its digits is 38880, while the sum is 38.

The square root of 115392638 is about 10742.0965365240. The cubic root of 115392638 is about 486.8472269484.

The spelling of 115392638 in words is "one hundred fifteen million, three hundred ninety-two thousand, six hundred thirty-eight".