13973636 has 12 divisors (see below), whose sum is σ = 24855180. Its totient is φ = 6872160.

The previous prime is 13973593. The next prime is 13973669. The reversal of 13973636 is 63637931.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6791236 + 7182400 = 2606^2 + 2680^2 .

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 13973636.

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, 28391 + ... + 28878.

It is an arithmetic number, because the mean of its divisors is an integer number (2071265).

Almost surely, 2^13973636 is an apocalyptic number.

It is an amenable number.

13973636 is a deficient number, since it is larger than the sum of its proper divisors (10881544).

13973636 is a wasteful number, since it uses less digits than its factorization.

13973636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57334 (or 57332 counting only the distinct ones).

The product of its digits is 61236, while the sum is 38.

The square root of 13973636 is about 3738.1326889237. The cubic root of 13973636 is about 240.8628432794.

The spelling of 13973636 in words is "thirteen million, nine hundred seventy-three thousand, six hundred thirty-six".