115869528 has 80 divisors (see below), whose sum is σ = 326830680. Its totient is φ = 38351232.

The previous prime is 115869527. The next prime is 115869583. The reversal of 115869528 is 825968511.

It is a happy number.

115869528 is a `hidden beast` number, since 11 + 58 + 69 + 528 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115869527) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 105076 + ... + 106172.

Almost surely, 2^115869528 is an apocalyptic number.

115869528 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115869528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163415340).

115869528 is an abundant number, since it is smaller than the sum of its proper divisors (210961152).

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

115869528 is a wasteful number, since it uses less digits than its factorization.

115869528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278 (or 1265 counting only the distinct ones).

The product of its digits is 172800, while the sum is 45.

The square root of 115869528 is about 10764.2708996011. The cubic root of 115869528 is about 487.5169792903.

The spelling of 115869528 in words is "one hundred fifteen million, eight hundred sixty-nine thousand, five hundred twenty-eight".