115138040 has 16 divisors (see below), whose sum is σ = 259060680. Its totient is φ = 46055200.

The previous prime is 115138039. The next prime is 115138057. The reversal of 115138040 is 40831511.

It is a junction number, because it is equal to n+sod(n) for n = 115137997 and 115138015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1439186 + ... + 1439265.

Almost surely, 2^115138040 is an apocalyptic number.

115138040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115138040 is an abundant number, since it is smaller than the sum of its proper divisors (143922640).

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

115138040 is a wasteful number, since it uses less digits than its factorization.

115138040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2878462 (or 2878458 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 115138040 is about 10730.2395127043. The cubic root of 115138040 is about 486.4889094563.

Adding to 115138040 its reverse (40831511), we get a palindrome (155969551).

The spelling of 115138040 in words is "one hundred fifteen million, one hundred thirty-eight thousand, forty".