13281908 has 6 divisors (see below), whose sum is σ = 23243346. Its totient is φ = 6640952.

The previous prime is 13281901. The next prime is 13281911. The reversal of 13281908 is 80918231.

13281908 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 6666724 + 6615184 = 2582^2 + 2572^2 .

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13281901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1660235 + ... + 1660242.

It is an arithmetic number, because the mean of its divisors is an integer number (3873891).

Almost surely, 2^13281908 is an apocalyptic number.

It is an amenable number.

13281908 is a deficient number, since it is larger than the sum of its proper divisors (9961438).

13281908 is a wasteful number, since it uses less digits than its factorization.

13281908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3320481 (or 3320479 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 13281908 is about 3644.4352100154. The cubic root of 13281908 is about 236.8209701495.

The spelling of 13281908 in words is "thirteen million, two hundred eighty-one thousand, nine hundred eight".