13281982 has 8 divisors (see below), whose sum is σ = 22769136. Its totient is φ = 5692272.

The previous prime is 13281973. The next prime is 13282019. The reversal of 13281982 is 28918231.

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

It is a super-2 number, since 2×13281982² = 352822091696648, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 474343 + ... + 474370.

It is an arithmetic number, because the mean of its divisors is an integer number (2846142).

Almost surely, 2^13281982 is an apocalyptic number.

13281982 is a deficient number, since it is larger than the sum of its proper divisors (9487154).

13281982 is an equidigital number, since it uses as much as digits as its factorization.

13281982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948722.

The product of its digits is 6912, while the sum is 34.

The square root of 13281982 is about 3644.4453624660. The cubic root of 13281982 is about 236.8214099638.

The spelling of 13281982 in words is "thirteen million, two hundred eighty-one thousand, nine hundred eighty-two".