36505220 has 12 divisors (see below), whose sum is σ = 76661004. Its totient is φ = 14602080.

The previous prime is 36505193. The next prime is 36505241. The reversal of 36505220 is 2250563.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4605316 + 31899904 = 2146^2 + 5648^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 912611 + ... + 912650.

It is an arithmetic number, because the mean of its divisors is an integer number (6388417).

Almost surely, 2^36505220 is an apocalyptic number.

It is an amenable number.

36505220 is an abundant number, since it is smaller than the sum of its proper divisors (40155784).

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

36505220 is a wasteful number, since it uses less digits than its factorization.

36505220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1825270 (or 1825268 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 36505220 is about 6041.9549816264. The cubic root of 36505220 is about 331.7301843227.

Adding to 36505220 its reverse (2250563), we get a palindrome (38755783).

The spelling of 36505220 in words is "thirty-six million, five hundred five thousand, two hundred twenty".