13280645 has 16 divisors (see below), whose sum is σ = 18272640. Its totient is φ = 9077184.

The previous prime is 13280599. The next prime is 13280647. The reversal of 13280645 is 54608231.

It is a cyclic number.

It is not a de Polignac number, because 13280645 - 2¹⁰ = 13279621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13280647) 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, 21146 + ... + 21764.

It is an arithmetic number, because the mean of its divisors is an integer number (1142040).

Almost surely, 2^13280645 is an apocalyptic number.

It is an amenable number.

13280645 is a deficient number, since it is larger than the sum of its proper divisors (4991995).

13280645 is an equidigital number, since it uses as much as digits as its factorization.

13280645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1244.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 13280645 is about 3644.2619280178. The cubic root of 13280645 is about 236.8134633374.

Adding to 13280645 its reverse (54608231), we get a palindrome (67888876).

The spelling of 13280645 in words is "thirteen million, two hundred eighty thousand, six hundred forty-five".