36864921 has 24 divisors (see below), whose sum is σ = 53542560. Its totient is φ = 22498560.

The previous prime is 36864917. The next prime is 36864937. The reversal of 36864921 is 12946863.

It is not a de Polignac number, because 36864921 - 2² = 36864917 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 36864921.

It is not an unprimeable number, because it can be changed into a prime (36864991) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 54441 + ... + 55113.

It is an arithmetic number, because the mean of its divisors is an integer number (2230940).

Almost surely, 2^36864921 is an apocalyptic number.

36864921 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

36864921 is a deficient number, since it is larger than the sum of its proper divisors (16677639).

36864921 is a wasteful number, since it uses less digits than its factorization.

36864921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757 (or 726 counting only the distinct ones).

The product of its digits is 62208, while the sum is 39.

The square root of 36864921 is about 6071.6489523028. The cubic root of 36864921 is about 332.8161833047.

The spelling of 36864921 in words is "thirty-six million, eight hundred sixty-four thousand, nine hundred twenty-one".