13320881 has 16 divisors (see below), whose sum is σ = 16373760. Its totient is φ = 10581840.

The previous prime is 13320869. The next prime is 13320883. The reversal of 13320881 is 18802331.

It is a cyclic number.

It is not a de Polignac number, because 13320881 - 2⁶ = 13320817 is a prime.

It is a super-2 number, since 2×13320881² = 354891741232322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13320881.

It is not an unprimeable number, because it can be changed into a prime (13320883) 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 15 ways as a sum of consecutive naturals, for example, 5186 + ... + 7316.

It is an arithmetic number, because the mean of its divisors is an integer number (1023360).

Almost surely, 2^13320881 is an apocalyptic number.

It is an amenable number.

13320881 is a deficient number, since it is larger than the sum of its proper divisors (3052879).

13320881 is a wasteful number, since it uses less digits than its factorization.

13320881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2204.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 13320881 is about 3649.7782124398. The cubic root of 13320881 is about 237.0523779384.

The spelling of 13320881 in words is "thirteen million, three hundred twenty thousand, eight hundred eighty-one".