13329281 has 8 divisors (see below), whose sum is σ = 15273024. Its totient is φ = 11395440.

The previous prime is 13329271. The next prime is 13329301. The reversal of 13329281 is 18292331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13329281 - 2¹⁸ = 13067137 is a prime.

It is a super-2 number, since 2×13329281² = 355339463953922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13329271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 686 + ... + 5208.

It is an arithmetic number, because the mean of its divisors is an integer number (1909128).

Almost surely, 2^13329281 is an apocalyptic number.

It is an amenable number.

13329281 is a deficient number, since it is larger than the sum of its proper divisors (1943743).

13329281 is an equidigital number, since it uses as much as digits as its factorization.

13329281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4951.

The product of its digits is 2592, while the sum is 29.

The square root of 13329281 is about 3650.9287859393. The cubic root of 13329281 is about 237.1021950030.

The spelling of 13329281 in words is "thirteen million, three hundred twenty-nine thousand, two hundred eighty-one".