13003946 has 16 divisors (see below), whose sum is σ = 21213576. Its totient is φ = 5953536.

The previous prime is 13003937. The next prime is 13003951. The reversal of 13003946 is 64930031.

13003946 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 4 ways, for example, as 11826721 + 1177225 = 3439^2 + 1085^2 .

It is a super-2 number, since 2×13003946² = 338205223141832, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3911 + ... + 6426.

Almost surely, 2^13003946 is an apocalyptic number.

13003946 is a deficient number, since it is larger than the sum of its proper divisors (8209630).

13003946 is a wasteful number, since it uses less digits than its factorization.

13003946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10393.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 13003946 is about 3606.0984456889. The cubic root of 13003946 is about 235.1572570491.

Adding to 13003946 its reverse (64930031), we get a palindrome (77933977).

The spelling of 13003946 in words is "thirteen million, three thousand, nine hundred forty-six".