36561204 has 36 divisors (see below), whose sum is σ = 93939300. Its totient is φ = 11986560.

The previous prime is 36561197. The next prime is 36561209. The reversal of 36561204 is 40216563.

36561204 is a `hidden beast` number, since 3 + 656 + 1 + 2 + 0 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12531600 + 24029604 = 3540^2 + 4902^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36561209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6129 + ... + 10520.

It is an arithmetic number, because the mean of its divisors is an integer number (2609425).

Almost surely, 2^36561204 is an apocalyptic number.

It is an amenable number.

36561204 is an abundant number, since it is smaller than the sum of its proper divisors (57378096).

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

36561204 is a wasteful number, since it uses less digits than its factorization.

36561204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16720 (or 16715 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 36561204 is about 6046.5861442636. The cubic root of 36561204 is about 331.8996769504.

Adding to 36561204 its reverse (40216563), we get a palindrome (76777767).

The spelling of 36561204 in words is "thirty-six million, five hundred sixty-one thousand, two hundred four".