16004244 has 12 divisors (see below), whose sum is σ = 37343264. Its totient is φ = 5334744.

The previous prime is 16004207. The next prime is 16004273. The reversal of 16004244 is 44240061.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×16004244² = 512271652023072, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16004244.

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, 666832 + ... + 666855.

Almost surely, 2^16004244 is an apocalyptic number.

It is an amenable number.

16004244 is an abundant number, since it is smaller than the sum of its proper divisors (21339020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16004244 is a wasteful number, since it uses less digits than its factorization.

16004244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333694 (or 1333692 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 16004244 is about 4000.5304648259. The cubic root of 16004244 is about 252.0064876133.

The spelling of 16004244 in words is "sixteen million, four thousand, two hundred forty-four".