16444281 has 16 divisors (see below), whose sum is σ = 25155584. Its totient is φ = 9360144.

The previous prime is 16444277. The next prime is 16444283. The reversal of 16444281 is 18244461.

It is not a de Polignac number, because 16444281 - 2² = 16444277 is a prime.

It is a super-2 number, since 2×16444281² = 540828755213922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16444283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4560 + ... + 7326.

It is an arithmetic number, because the mean of its divisors is an integer number (1572224).

Almost surely, 2^16444281 is an apocalyptic number.

It is an amenable number.

16444281 is a deficient number, since it is larger than the sum of its proper divisors (8711303).

16444281 is a wasteful number, since it uses less digits than its factorization.

16444281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3060.

The product of its digits is 6144, while the sum is 30.

The square root of 16444281 is about 4055.1548675729. The cubic root of 16444281 is about 254.2952783599.

The spelling of 16444281 in words is "sixteen million, four hundred forty-four thousand, two hundred eighty-one".