16994224 has 20 divisors (see below), whose sum is σ = 35459536. Its totient is φ = 7843392.

The previous prime is 16994209. The next prime is 16994233. The reversal of 16994224 is 42249961.

It is a happy number.

It is an unprimeable number.

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, 40644 + ... + 41059.

Almost surely, 2^16994224 is an apocalyptic number.

It is an amenable number.

16994224 is an abundant number, since it is smaller than the sum of its proper divisors (18465312).

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

16994224 is a wasteful number, since it uses less digits than its factorization.

16994224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81724 (or 81718 counting only the distinct ones).

The product of its digits is 31104, while the sum is 37.

The square root of 16994224 is about 4122.4051232260. The cubic root of 16994224 is about 257.0990347427.

The spelling of 16994224 in words is "sixteen million, nine hundred ninety-four thousand, two hundred twenty-four".