13855972 has 36 divisors (see below), whose sum is σ = 26644800. Its totient is φ = 6301152.

The previous prime is 13855951. The next prime is 13855979. The reversal of 13855972 is 27955831.

It is not an unprimeable number, because it can be changed into a prime (13855979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69529 + ... + 69727.

Almost surely, 2^13855972 is an apocalyptic number.

It is an amenable number.

13855972 is a deficient number, since it is larger than the sum of its proper divisors (12788828).

13855972 is a wasteful number, since it uses less digits than its factorization.

13855972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332 (or 317 counting only the distinct ones).

The product of its digits is 75600, while the sum is 40.

The square root of 13855972 is about 3722.3610786704. The cubic root of 13855972 is about 240.1848806913.

The spelling of 13855972 in words is "thirteen million, eight hundred fifty-five thousand, nine hundred seventy-two".