13722424 has 16 divisors (see below), whose sum is σ = 25840800. Its totient is φ = 6831552.

The previous prime is 13722409. The next prime is 13722431. The reversal of 13722424 is 42422731.

It is a happy 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 3 ways as a sum of consecutive naturals, for example, 1677 + ... + 5500.

It is an arithmetic number, because the mean of its divisors is an integer number (1615050).

Almost surely, 2^13722424 is an apocalyptic number.

It is an amenable number.

13722424 is a deficient number, since it is larger than the sum of its proper divisors (12118376).

13722424 is a wasteful number, since it uses less digits than its factorization.

13722424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7422 (or 7418 counting only the distinct ones).

The product of its digits is 2688, while the sum is 25.

The square root of 13722424 is about 3704.3790302829. The cubic root of 13722424 is about 239.4107302817.

The spelling of 13722424 in words is "thirteen million, seven hundred twenty-two thousand, four hundred twenty-four".