36115520 has 112 divisors (see below), whose sum is σ = 102705408. Its totient is φ = 11827200.

The previous prime is 36115517. The next prime is 36115553. The reversal of 36115520 is 2551163.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (23).

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, 51170 + ... + 51870.

Almost surely, 2^36115520 is an apocalyptic number.

36115520 is the 4907-th pentagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 36115520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51352704).

36115520 is an abundant number, since it is smaller than the sum of its proper divisors (66589888).

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

36115520 is a wasteful number, since it uses less digits than its factorization.

36115520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748 (or 738 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 36115520 is about 6009.6189563066. The cubic root of 36115520 is about 330.5455317075.

Adding to 36115520 its reverse (2551163), we get a palindrome (38666683).

The spelling of 36115520 in words is "thirty-six million, one hundred fifteen thousand, five hundred twenty".