13273921 has 8 divisors (see below), whose sum is σ = 14298624. Its totient is φ = 12286560.

The previous prime is 13273901. The next prime is 13273933. The reversal of 13273921 is 12937231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13273921 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 13273921.

It is not an unprimeable number, because it can be changed into a prime (13273901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8596 + ... + 10021.

It is an arithmetic number, because the mean of its divisors is an integer number (1787328).

Almost surely, 2^13273921 is an apocalyptic number.

It is an amenable number.

13273921 is a deficient number, since it is larger than the sum of its proper divisors (1024703).

13273921 is a wasteful number, since it uses less digits than its factorization.

13273921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18671.

The product of its digits is 2268, while the sum is 28.

The square root of 13273921 is about 3643.3392650150. The cubic root of 13273921 is about 236.7734903156.

The spelling of 13273921 in words is "thirteen million, two hundred seventy-three thousand, nine hundred twenty-one".