115213278 has 8 divisors (see below), whose sum is σ = 230426568. Its totient is φ = 38404424.

The previous prime is 115213277. The next prime is 115213289. The reversal of 115213278 is 872312511.

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

115213278 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115213277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9601101 + ... + 9601112.

It is an arithmetic number, because the mean of its divisors is an integer number (28803321).

Almost surely, 2^115213278 is an apocalyptic number.

115213278 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

115213278 is a wasteful number, since it uses less digits than its factorization.

115213278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19202218.

The product of its digits is 3360, while the sum is 30.

The square root of 115213278 is about 10733.7448264806. The cubic root of 115213278 is about 486.5948532513.

Adding to 115213278 its reverse (872312511), we get a palindrome (987525789).

The spelling of 115213278 in words is "one hundred fifteen million, two hundred thirteen thousand, two hundred seventy-eight".