36381636 has 30 divisors (see below), whose sum is σ = 95109630. Its totient is φ = 12127104.

The previous prime is 36381629. The next prime is 36381641. The reversal of 36381636 is 63618363.

36381636 is a `hidden beast` number, since 3 + 638 + 16 + 3 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 36360900 + 20736 = 6030^2 + 144^2 .

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

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 36381636.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 55821 + ... + 56468.

It is an arithmetic number, because the mean of its divisors is an integer number (3170321).

Almost surely, 2^36381636 is an apocalyptic number.

36381636 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

36381636 is an abundant number, since it is smaller than the sum of its proper divisors (58727994).

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

36381636 is a wasteful number, since it uses less digits than its factorization.

36381636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112305 (or 112294 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 36381636 is about 6031.7191579184. The cubic root of 36381636 is about 331.3554169766.

Adding to 36381636 its reverse (63618363), we get a palindrome (99999999).

The spelling of 36381636 in words is "thirty-six million, three hundred eighty-one thousand, six hundred thirty-six".