16624222 has 8 divisors (see below), whose sum is σ = 24982776. Its totient is φ = 8296632.

The previous prime is 16624219. The next prime is 16624243. The reversal of 16624222 is 22242661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6348 + ... + 8575.

It is an arithmetic number, because the mean of its divisors is an integer number (3122847).

Almost surely, 2^16624222 is an apocalyptic number.

16624222 is a deficient number, since it is larger than the sum of its proper divisors (8358554).

16624222 is a wasteful number, since it uses less digits than its factorization.

16624222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15482.

The product of its digits is 2304, while the sum is 25.

The square root of 16624222 is about 4077.2812019776. The cubic root of 16624222 is about 255.2194548082.

Adding to 16624222 its reverse (22242661), we get a palindrome (38866883).

The spelling of 16624222 in words is "sixteen million, six hundred twenty-four thousand, two hundred twenty-two".