16680224 has 24 divisors (see below), whose sum is σ = 35825328. Its totient is φ = 7581760.

The previous prime is 16680199. The next prime is 16680227. The reversal of 16680224 is 42208661.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (16680227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23342 + ... + 24045.

It is an arithmetic number, because the mean of its divisors is an integer number (1492722).

Almost surely, 2^16680224 is an apocalyptic number.

It is an amenable number.

16680224 is an abundant number, since it is smaller than the sum of its proper divisors (19145104).

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

16680224 is a wasteful number, since it uses less digits than its factorization.

16680224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47408 (or 47400 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 16680224 is about 4084.1429945583. The cubic root of 16680224 is about 255.5057194426.

Adding to 16680224 its reverse (42208661), we get a palindrome (58888885).

The spelling of 16680224 in words is "sixteen million, six hundred eighty thousand, two hundred twenty-four".