16321444 has 24 divisors (see below), whose sum is σ = 30538368. Its totient is φ = 7613760.

The previous prime is 16321441. The next prime is 16321447. The reversal of 16321444 is 44412361.

16321444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (16321441) and next prime (16321447).

It is not an unprimeable number, because it can be changed into a prime (16321441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1609 + ... + 5935.

It is an arithmetic number, because the mean of its divisors is an integer number (1272432).

Almost surely, 2^16321444 is an apocalyptic number.

It is an amenable number.

16321444 is a deficient number, since it is larger than the sum of its proper divisors (14216924).

16321444 is a wasteful number, since it uses less digits than its factorization.

16321444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4395 (or 4393 counting only the distinct ones).

The product of its digits is 2304, while the sum is 25.

The square root of 16321444 is about 4039.9806930232. The cubic root of 16321444 is about 253.6605091012.

The spelling of 16321444 in words is "sixteen million, three hundred twenty-one thousand, four hundred forty-four".