16446081 has 24 divisors (see below), whose sum is σ = 23553376. Its totient is φ = 10200960.

The previous prime is 16446071. The next prime is 16446083. The reversal of 16446081 is 18064461.

It is not a de Polignac number, because 16446081 - 2¹¹ = 16444033 is a prime.

It is a super-2 number, since 2×16446081² = 540947160517122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16446083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68121 + ... + 68361.

Almost surely, 2^16446081 is an apocalyptic number.

It is an amenable number.

16446081 is a deficient number, since it is larger than the sum of its proper divisors (7107295).

16446081 is a wasteful number, since it uses less digits than its factorization.

16446081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 16446081 is about 4055.3768012356. The cubic root of 16446081 is about 254.3045564548.

The spelling of 16446081 in words is "sixteen million, four hundred forty-six thousand, eighty-one".