13140446 has 16 divisors (see below), whose sum is σ = 21565440. Its totient is φ = 5955480.

The previous prime is 13140433. The next prime is 13140461. The reversal of 13140446 is 64404131.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 9635 + ... + 10913.

It is an arithmetic number, because the mean of its divisors is an integer number (1347840).

Almost surely, 2^13140446 is an apocalyptic number.

13140446 is a deficient number, since it is larger than the sum of its proper divisors (8424994).

13140446 is a wasteful number, since it uses less digits than its factorization.

13140446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1759.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 13140446 is about 3624.9753102607. The cubic root of 13140446 is about 235.9771954408.

Adding to 13140446 its reverse (64404131), we get a palindrome (77544577).

The spelling of 13140446 in words is "thirteen million, one hundred forty thousand, four hundred forty-six".