115278765 has 16 divisors (see below), whose sum is σ = 210795648. Its totient is φ = 52698816.

The previous prime is 115278731. The next prime is 115278781. The reversal of 115278765 is 567872511.

It is not a de Polignac number, because 115278765 - 2⁶ = 115278701 is a prime.

It is a Curzon number.

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, 548842 + ... + 549051.

It is an arithmetic number, because the mean of its divisors is an integer number (13174728).

Almost surely, 2^115278765 is an apocalyptic number.

115278765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

115278765 is a deficient number, since it is larger than the sum of its proper divisors (95516883).

115278765 is a wasteful number, since it uses less digits than its factorization.

115278765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097908.

The product of its digits is 117600, while the sum is 42.

The square root of 115278765 is about 10736.7949128220. The cubic root of 115278765 is about 486.6870289743.

The spelling of 115278765 in words is "one hundred fifteen million, two hundred seventy-eight thousand, seven hundred sixty-five".