13220996 has 6 divisors (see below), whose sum is σ = 23136750. Its totient is φ = 6610496.

The previous prime is 13220993. The next prime is 13221007. The reversal of 13220996 is 69902231.

It can be written as a sum of positive squares in only one way, i.e., 13060996 + 160000 = 3614^2 + 400^2 .

It is not an unprimeable number, because it can be changed into a prime (13220993) 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 as a sum of consecutive naturals, namely, 1652621 + ... + 1652628.

It is an arithmetic number, because the mean of its divisors is an integer number (3856125).

Almost surely, 2^13220996 is an apocalyptic number.

It is an amenable number.

13220996 is a deficient number, since it is larger than the sum of its proper divisors (9915754).

13220996 is a wasteful number, since it uses less digits than its factorization.

13220996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3305253 (or 3305251 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 13220996 is about 3636.0687562256. The cubic root of 13220996 is about 236.4583880292.

The spelling of 13220996 in words is "thirteen million, two hundred twenty thousand, nine hundred ninety-six".