13607281 has 4 divisors (see below), whose sum is σ = 13619200. Its totient is φ = 13595364.

The previous prime is 13607263. The next prime is 13607303. The reversal of 13607281 is 18270631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13607281 - 2¹⁷ = 13476209 is a prime.

It is a super-2 number, since 2×13607281² = 370316192425922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13607201) 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 in 3 ways as a sum of consecutive naturals, for example, 4041 + ... + 6598.

It is an arithmetic number, because the mean of its divisors is an integer number (3404800).

Almost surely, 2^13607281 is an apocalyptic number.

It is an amenable number.

13607281 is a deficient number, since it is larger than the sum of its proper divisors (11919).

13607281 is a wasteful number, since it uses less digits than its factorization.

13607281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11918.

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

The square root of 13607281 is about 3688.8048199925. The cubic root of 13607281 is about 238.7392276053.

The spelling of 13607281 in words is "thirteen million, six hundred seven thousand, two hundred eighty-one".