115609536 has 168 divisors, whose sum is σ = 386571744. Its totient is φ = 32348160.

The previous prime is 115609531. The next prime is 115609553. The reversal of 115609536 is 635906511.

115609536 is a `hidden beast` number, since 1 + 1 + 560 + 95 + 3 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 115609536.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115609531) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 213426 + ... + 213966.

Almost surely, 2^115609536 is an apocalyptic number.

115609536 is a gapful number since it is divisible by the number (16) 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 115609536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193285872).

115609536 is an abundant number, since it is smaller than the sum of its proper divisors (270962208).

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

115609536 is a wasteful number, since it uses less digits than its factorization.

115609536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619 (or 606 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 115609536 is about 10752.1874983652. The cubic root of 115609536 is about 487.1520704789.

The spelling of 115609536 in words is "one hundred fifteen million, six hundred nine thousand, five hundred thirty-six".