13330891 has 6 divisors (see below), whose sum is σ = 15507420. Its totient is φ = 11426436.

The previous prime is 13330853. The next prime is 13330897. The reversal of 13330891 is 19803331.

It is not a de Polignac number, because 13330891 - 2⁷ = 13330763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13330897) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 135981 + ... + 136078.

It is an arithmetic number, because the mean of its divisors is an integer number (2584570).

Almost surely, 2^13330891 is an apocalyptic number.

13330891 is a deficient number, since it is larger than the sum of its proper divisors (2176529).

13330891 is an equidigital number, since it uses as much as digits as its factorization.

13330891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272073 (or 272066 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 13330891 is about 3651.1492711200. The cubic root of 13330891 is about 237.1117408834. Note that the first 3 decimals are identical.

The spelling of 13330891 in words is "thirteen million, three hundred thirty thousand, eight hundred ninety-one".