13280236 has 6 divisors (see below), whose sum is σ = 23240420. Its totient is φ = 6640116.

The previous prime is 13280227. The next prime is 13280237. The reversal of 13280236 is 63208231.

It is a self number, because there is not a number n which added to its sum of digits gives 13280236.

It is not an unprimeable number, because it can be changed into a prime (13280237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1660026 + ... + 1660033.

Almost surely, 2^13280236 is an apocalyptic number.

It is an amenable number.

13280236 is a deficient number, since it is larger than the sum of its proper divisors (9960184).

13280236 is a wasteful number, since it uses less digits than its factorization.

13280236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3320063 (or 3320061 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 13280236 is about 3644.2058119706. The cubic root of 13280236 is about 236.8110322882.

Adding to 13280236 its reverse (63208231), we get a palindrome (76488467).

The spelling of 13280236 in words is "thirteen million, two hundred eighty thousand, two hundred thirty-six".