16428224 has 28 divisors (see below), whose sum is σ = 32790384. Its totient is φ = 8166144.

The previous prime is 16428221. The next prime is 16428227. The reversal of 16428224 is 42282461.

16428224 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (16428221) and next prime (16428227).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16428221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11957 + ... + 13259.

Almost surely, 2^16428224 is an apocalyptic number.

It is an amenable number.

16428224 is a deficient number, since it is larger than the sum of its proper divisors (16362160).

16428224 is a wasteful number, since it uses less digits than its factorization.

16428224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512 (or 1502 counting only the distinct ones).

The product of its digits is 6144, while the sum is 29.

The square root of 16428224 is about 4053.1745582938. The cubic root of 16428224 is about 254.2124826243.

The spelling of 16428224 in words is "sixteen million, four hundred twenty-eight thousand, two hundred twenty-four".