13280761 has 8 divisors (see below), whose sum is σ = 14651784. Its totient is φ = 11959680.

The previous prime is 13280759. The next prime is 13280779. The reversal of 13280761 is 16708231.

It can be written as a sum of positive squares in 4 ways, for example, as 2025 + 13278736 = 45^2 + 3644^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13280761 - 2¹ = 13280759 is a prime.

It is a super-2 number, since 2×13280761² = 352757225478242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13280161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11926 + ... + 12991.

It is an arithmetic number, because the mean of its divisors is an integer number (1831473).

Almost surely, 2^13280761 is an apocalyptic number.

It is an amenable number.

13280761 is a deficient number, since it is larger than the sum of its proper divisors (1371023).

13280761 is a wasteful number, since it uses less digits than its factorization.

13280761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24971.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 13280761 is about 3644.2778434142. The cubic root of 13280761 is about 236.8141528190.

Adding to 13280761 its reverse (16708231), we get a palindrome (29988992).

It can be divided in two parts, 13280 and 761, that added together give a palindrome (14041).

The spelling of 13280761 in words is "thirteen million, two hundred eighty thousand, seven hundred sixty-one".