115194438 has 48 divisors (see below), whose sum is σ = 261817920. Its totient is φ = 36554112.

The previous prime is 115194437. The next prime is 115194449. The reversal of 115194438 is 834491511.

It is a super-2 number, since 2×115194438² = 26539517092271688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115194437) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36595 + ... + 39617.

It is an arithmetic number, because the mean of its divisors is an integer number (5454540).

Almost surely, 2^115194438 is an apocalyptic number.

115194438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 115194438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130908960).

115194438 is an abundant number, since it is smaller than the sum of its proper divisors (146623482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115194438 is a wasteful number, since it uses less digits than its factorization.

115194438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3133 (or 3130 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 115194438 is about 10732.8671844946. The cubic root of 115194438 is about 486.5683286848.

The spelling of 115194438 in words is "one hundred fifteen million, one hundred ninety-four thousand, four hundred thirty-eight".