36643220 has 24 divisors (see below), whose sum is σ = 77674464. Its totient is φ = 14519456.

The previous prime is 36643151. The next prime is 36643237. The reversal of 36643220 is 2234663.

It is a self number, because there is not a number n which added to its sum of digits gives 36643220.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 6422 + ... + 10701.

It is an arithmetic number, because the mean of its divisors is an integer number (3236436).

Almost surely, 2^36643220 is an apocalyptic number.

It is an amenable number.

36643220 is an abundant number, since it is smaller than the sum of its proper divisors (41031244).

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

36643220 is a wasteful number, since it uses less digits than its factorization.

36643220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17239 (or 17237 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 36643220 is about 6053.3643538119. The cubic root of 36643220 is about 332.1476698288.

Adding to 36643220 its reverse (2234663), we get a palindrome (38877883).

It can be divided in two parts, 36643 and 220, that added together give a palindrome (36863).

The spelling of 36643220 in words is "thirty-six million, six hundred forty-three thousand, two hundred twenty".