16563330 has 96 divisors (see below), whose sum is σ = 50139648. Its totient is φ = 3715200.

The previous prime is 16563319. The next prime is 16563347. The reversal of 16563330 is 3336561.

16563330 is a `hidden beast` number, since 1 + 656 + 3 + 3 + 3 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 16563294 and 16563303.

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 47 ways as a sum of consecutive naturals, for example, 38215 + ... + 38645.

It is an arithmetic number, because the mean of its divisors is an integer number (522288).

Almost surely, 2^16563330 is an apocalyptic number.

16563330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16563330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25069824).

16563330 is an abundant number, since it is smaller than the sum of its proper divisors (33576318).

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

16563330 is a wasteful number, since it uses less digits than its factorization.

16563330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512 (or 509 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 27.

The square root of 16563330 is about 4069.8071207368. The cubic root of 16563330 is about 254.9074635402.

Adding to 16563330 its reverse (3336561), we get a palindrome (19899891).

The spelling of 16563330 in words is "sixteen million, five hundred sixty-three thousand, three hundred thirty".