115287279 has 8 divisors (see below), whose sum is σ = 153811632. Its totient is φ = 76810560.

The previous prime is 115287253. The next prime is 115287311. The reversal of 115287279 is 972782511.

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

It is not a de Polignac number, because 115287279 - 2¹¹ = 115285231 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 115287279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115287379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5814 + ... + 16259.

It is an arithmetic number, because the mean of its divisors is an integer number (19226454).

Almost surely, 2^115287279 is an apocalyptic number.

115287279 is a deficient number, since it is larger than the sum of its proper divisors (38524353).

115287279 is a wasteful number, since it uses less digits than its factorization.

115287279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23817.

The product of its digits is 70560, while the sum is 42.

The square root of 115287279 is about 10737.1913925384. The cubic root of 115287279 is about 486.6990102251.

The spelling of 115287279 in words is "one hundred fifteen million, two hundred eighty-seven thousand, two hundred seventy-nine".