115138206 has 32 divisors (see below), whose sum is σ = 258266880. Its totient is φ = 38018808.

The previous prime is 115138189. The next prime is 115138213. The reversal of 115138206 is 602831511.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 115138206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4186 + ... + 15741.

It is an arithmetic number, because the mean of its divisors is an integer number (8070840).

Almost surely, 2^115138206 is an apocalyptic number.

115138206 is an abundant number, since it is smaller than the sum of its proper divisors (143128674).

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

115138206 is a wasteful number, since it uses less digits than its factorization.

115138206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20045 (or 20039 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 115138206 is about 10730.2472478503. The cubic root of 115138206 is about 486.4891432543.

Adding to 115138206 its reverse (602831511), we get a palindrome (717969717).

The spelling of 115138206 in words is "one hundred fifteen million, one hundred thirty-eight thousand, two hundred six".