13280755 has 16 divisors (see below), whose sum is σ = 16299360. Its totient is φ = 10386432.

The previous prime is 13280749. The next prime is 13280759. The reversal of 13280755 is 55708231.

It is a cyclic number.

It is not a de Polignac number, because 13280755 - 2¹⁵ = 13247987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13280759) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67317 + ... + 67513.

It is an arithmetic number, because the mean of its divisors is an integer number (1018710).

Almost surely, 2^13280755 is an apocalyptic number.

13280755 is a deficient number, since it is larger than the sum of its proper divisors (3018605).

13280755 is a wasteful number, since it uses less digits than its factorization.

13280755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 13280755 is about 3644.2770202058. The cubic root of 13280755 is about 236.8141171562.

Adding to 13280755 its reverse (55708231), we get a palindrome (68988986).

The spelling of 13280755 in words is "thirteen million, two hundred eighty thousand, seven hundred fifty-five".