118521536 has 56 divisors (see below), whose sum is σ = 273259296. Its totient is φ = 49950720.

The previous prime is 118521523. The next prime is 118521539. The reversal of 118521536 is 635125811.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (118521539) 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, 25160 + ... + 29496.

Almost surely, 2^118521536 is an apocalyptic number.

118521536 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 118521536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136629648).

118521536 is an abundant number, since it is smaller than the sum of its proper divisors (154737760).

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

118521536 is an equidigital number, since it uses as much as digits as its factorization.

118521536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4417 (or 4407 counting only the distinct ones).

The product of its digits is 7200, while the sum is 32.

The square root of 118521536 is about 10886.7596648406. The cubic root of 118521536 is about 491.2083684696.

The spelling of 118521536 in words is "one hundred eighteen million, five hundred twenty-one thousand, five hundred thirty-six".