115288438 has 4 divisors (see below), whose sum is σ = 172932660. Its totient is φ = 57644218.

The previous prime is 115288429. The next prime is 115288457. The reversal of 115288438 is 834882511.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 115288438.

It is a congruent number.

It is an unprimeable number.

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, 28822108 + ... + 28822111.

It is an arithmetic number, because the mean of its divisors is an integer number (43233165).

Almost surely, 2^115288438 is an apocalyptic number.

115288438 is a deficient number, since it is larger than the sum of its proper divisors (57644222).

115288438 is an equidigital number, since it uses as much as digits as its factorization.

115288438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57644221.

The product of its digits is 61440, while the sum is 40.

The square root of 115288438 is about 10737.2453636862. The cubic root of 115288438 is about 486.7006411719.

The spelling of 115288438 in words is "one hundred fifteen million, two hundred eighty-eight thousand, four hundred thirty-eight".