13305872 has 10 divisors (see below), whose sum is σ = 25780158. Its totient is φ = 6652928.

The previous prime is 13305839. The next prime is 13305881. The reversal of 13305872 is 27850331.

It can be written as a sum of positive squares in only one way, i.e., 9634816 + 3671056 = 3104^2 + 1916^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415793 + ... + 415824.

Almost surely, 2^13305872 is an apocalyptic number.

It is an amenable number.

13305872 is a deficient number, since it is larger than the sum of its proper divisors (12474286).

13305872 is an equidigital number, since it uses as much as digits as its factorization.

13305872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831625 (or 831619 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 13305872 is about 3647.7214805958. The cubic root of 13305872 is about 236.9633133526.

The spelling of 13305872 in words is "thirteen million, three hundred five thousand, eight hundred seventy-two".