13280340 has 48 divisors (see below), whose sum is σ = 37396800. Its totient is φ = 3521280.

The previous prime is 13280339. The next prime is 13280353. The reversal of 13280340 is 4308231.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12136 + ... + 13184.

It is an arithmetic number, because the mean of its divisors is an integer number (779100).

Almost surely, 2^13280340 is an apocalyptic number.

13280340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13280340 is an abundant number, since it is smaller than the sum of its proper divisors (24116460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13280340 is a wasteful number, since it uses less digits than its factorization.

13280340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272 (or 1270 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 13280340 is about 3644.2200811696. The cubic root of 13280340 is about 236.8116504570.

Adding to 13280340 its reverse (4308231), we get a palindrome (17588571).

The spelling of 13280340 in words is "thirteen million, two hundred eighty thousand, three hundred forty".