115778 has 16 divisors (see below), whose sum is σ = 192696. Its totient is φ = 51840.

The previous prime is 115777. The next prime is 115781. The reversal of 115778 is 877511.

It can be written as a sum of positive squares in 4 ways, for example, as 49729 + 66049 = 223^2 + 257^2 .

It is a plaindrome in base 10 and base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 115778.

It is not an unprimeable number, because it can be changed into a prime (115771) 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, 1550 + ... + 1622.

2¹¹⁵⁷⁷⁸ is an apocalyptic number.

115778 is a deficient number, since it is larger than the sum of its proper divisors (76918).

115778 is a wasteful number, since it uses less digits than its factorization.

115778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149.

The product of its digits is 1960, while the sum is 29.

The square root of 115778 is about 340.2616640176. The cubic root of 115778 is about 48.7388578524.

The spelling of 115778 in words is "one hundred fifteen thousand, seven hundred seventy-eight".