13144646 has 16 divisors (see below), whose sum is σ = 20193648. Its totient is φ = 6415200.

The previous prime is 13144639. The next prime is 13144673. The reversal of 13144646 is 64644131.

It is a congruent number.

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, 19556 + ... + 20216.

It is an arithmetic number, because the mean of its divisors is an integer number (1262103).

Almost surely, 2^13144646 is an apocalyptic number.

13144646 is a deficient number, since it is larger than the sum of its proper divisors (7049002).

13144646 is a wasteful number, since it uses less digits than its factorization.

13144646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887.

The product of its digits is 6912, while the sum is 29.

The square root of 13144646 is about 3625.5545782680. The cubic root of 13144646 is about 236.0023340763.

Adding to 13144646 its reverse (64644131), we get a palindrome (77788777).

The spelling of 13144646 in words is "thirteen million, one hundred forty-four thousand, six hundred forty-six".