13281966 has 12 divisors (see below), whose sum is σ = 28777632. Its totient is φ = 4427316.

The previous prime is 13281941. The next prime is 13281967. The reversal of 13281966 is 66918231.

It is a self number, because there is not a number n which added to its sum of digits gives 13281966.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13281967) 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 5 ways as a sum of consecutive naturals, for example, 368926 + ... + 368961.

It is an arithmetic number, because the mean of its divisors is an integer number (2398136).

Almost surely, 2^13281966 is an apocalyptic number.

13281966 is an abundant number, since it is smaller than the sum of its proper divisors (15495666).

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

13281966 is a wasteful number, since it uses less digits than its factorization.

13281966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737895 (or 737892 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 13281966 is about 3644.4431673439. The cubic root of 13281966 is about 236.8213148690.

The spelling of 13281966 in words is "thirteen million, two hundred eighty-one thousand, nine hundred sixty-six".