16620056 has 32 divisors (see below), whose sum is σ = 31968000. Its totient is φ = 8098560.

The previous prime is 16620049. The next prime is 16620119. The reversal of 16620056 is 65002661.

It is a super-2 number, since 2×16620056² = 552452522886272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 86921 + ... + 87111.

It is an arithmetic number, because the mean of its divisors is an integer number (999000).

Almost surely, 2^16620056 is an apocalyptic number.

It is an amenable number.

16620056 is a deficient number, since it is larger than the sum of its proper divisors (15347944).

16620056 is a wasteful number, since it uses less digits than its factorization.

16620056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419 (or 415 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 16620056 is about 4076.7702903156. The cubic root of 16620056 is about 255.1981338490.

The spelling of 16620056 in words is "sixteen million, six hundred twenty thousand, fifty-six".