13219144 has 32 divisors (see below), whose sum is σ = 25827840. Its totient is φ = 6336000.

The previous prime is 13219139. The next prime is 13219153. The reversal of 13219144 is 44191231.

It is a happy 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, 37272 + ... + 37624.

It is an arithmetic number, because the mean of its divisors is an integer number (807120).

Almost surely, 2^13219144 is an apocalyptic number.

It is an amenable number.

13219144 is a deficient number, since it is larger than the sum of its proper divisors (12608696).

13219144 is a wasteful number, since it uses less digits than its factorization.

13219144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541 (or 537 counting only the distinct ones).

The product of its digits is 864, while the sum is 25.

The square root of 13219144 is about 3635.8140766546. The cubic root of 13219144 is about 236.4473464661.

The spelling of 13219144 in words is "thirteen million, two hundred nineteen thousand, one hundred forty-four".