13328919 has 6 divisors (see below), whose sum is σ = 19252896. Its totient is φ = 8885940.

The previous prime is 13328911. The next prime is 13328929. The reversal of 13328919 is 91982331.

13328919 is digitally balanced in base 2, base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13328919 - 2³ = 13328911 is a prime.

It is a super-2 number, since 2×13328919² = 355320163417122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13328911) 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, 740487 + ... + 740504.

It is an arithmetic number, because the mean of its divisors is an integer number (3208816).

Almost surely, 2^13328919 is an apocalyptic number.

13328919 is a deficient number, since it is larger than the sum of its proper divisors (5923977).

13328919 is a wasteful number, since it uses less digits than its factorization.

13328919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1480997 (or 1480994 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 13328919 is about 3650.8792091769. The cubic root of 13328919 is about 237.1000485564.

The spelling of 13328919 in words is "thirteen million, three hundred twenty-eight thousand, nine hundred nineteen".