16224566 has 4 divisors (see below), whose sum is σ = 24336852. Its totient is φ = 8112282.

The previous prime is 16224557. The next prime is 16224577. The reversal of 16224566 is 66542261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66542261 = 269 ⋅247369.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4056140 + ... + 4056143.

It is an arithmetic number, because the mean of its divisors is an integer number (6084213).

Almost surely, 2^16224566 is an apocalyptic number.

16224566 is a deficient number, since it is larger than the sum of its proper divisors (8112286).

16224566 is an equidigital number, since it uses as much as digits as its factorization.

16224566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8112285.

The product of its digits is 17280, while the sum is 32.

The square root of 16224566 is about 4027.9729393331. The cubic root of 16224566 is about 253.1576347904.

The spelling of 16224566 in words is "sixteen million, two hundred twenty-four thousand, five hundred sixty-six".