16643056 has 10 divisors (see below), whose sum is σ = 32245952. Its totient is φ = 8321520.

The previous prime is 16643023. The next prime is 16643087. The reversal of 16643056 is 65034661.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 520080 + ... + 520111.

Almost surely, 2^16643056 is an apocalyptic number.

16643056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16643056 is a deficient number, since it is larger than the sum of its proper divisors (15602896).

16643056 is a wasteful number, since it uses less digits than its factorization.

16643056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040199 (or 1040193 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 16643056 is about 4079.5901754956. The cubic root of 16643056 is about 255.3157999506.

The spelling of 16643056 in words is "sixteen million, six hundred forty-three thousand, fifty-six".