16690224 has 40 divisors (see below), whose sum is σ = 43267072. Its totient is φ = 5544000.

The previous prime is 16690211. The next prime is 16690229. The reversal of 16690224 is 42209661.

It is a junction number, because it is equal to n+sod(n) for n = 16690191 and 16690200.

It is not an unprimeable number, because it can be changed into a prime (16690229) by changing a digit.

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, 21849 + ... + 22599.

Almost surely, 2^16690224 is an apocalyptic number.

It is an amenable number.

16690224 is an abundant number, since it is smaller than the sum of its proper divisors (26576848).

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

16690224 is a wasteful number, since it uses less digits than its factorization.

16690224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1225 (or 1219 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 16690224 is about 4085.3670581724. The cubic root of 16690224 is about 255.5567688523.

Adding to 16690224 its reverse (42209661), we get a palindrome (58899885).

The spelling of 16690224 in words is "sixteen million, six hundred ninety thousand, two hundred twenty-four".