115140278 has 8 divisors (see below), whose sum is σ = 188411400. Its totient is φ = 52336480.

The previous prime is 115140257. The next prime is 115140281. The reversal of 115140278 is 872041511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 115140278.

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 in 3 ways as a sum of consecutive naturals, for example, 2616803 + ... + 2616846.

It is an arithmetic number, because the mean of its divisors is an integer number (23551425).

Almost surely, 2^115140278 is an apocalyptic number.

115140278 is a deficient number, since it is larger than the sum of its proper divisors (73271122).

115140278 is a wasteful number, since it uses less digits than its factorization.

115140278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5233662.

The product of its (nonzero) digits is 2240, while the sum is 29.

The square root of 115140278 is about 10730.3437969154. The cubic root of 115140278 is about 486.4920614847.

Adding to 115140278 its reverse (872041511), we get a palindrome (987181789).

The spelling of 115140278 in words is "one hundred fifteen million, one hundred forty thousand, two hundred seventy-eight".