16559244 has 72 divisors (see below), whose sum is σ = 46230912. Its totient is φ = 4965120.

The previous prime is 16559237. The next prime is 16559303. The reversal of 16559244 is 44295561.

16559244 is a `hidden beast` number, since 1 + 65 + 592 + 4 + 4 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 16559199 and 16559208.

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 23 ways as a sum of consecutive naturals, for example, 18757 + ... + 19619.

It is an arithmetic number, because the mean of its divisors is an integer number (642096).

Almost surely, 2^16559244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16559244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23115456).

16559244 is an abundant number, since it is smaller than the sum of its proper divisors (29671668).

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

16559244 is a wasteful number, since it uses less digits than its factorization.

16559244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927 (or 922 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 16559244 is about 4069.3051003826. The cubic root of 16559244 is about 254.8865008160.

The spelling of 16559244 in words is "sixteen million, five hundred fifty-nine thousand, two hundred forty-four".