16243227 has 64 divisors (see below), whose sum is σ = 32363520. Its totient is φ = 7776000.

The previous prime is 16243223. The next prime is 16243229. The reversal of 16243227 is 72234261.

16243227 is a `hidden beast` number, since 1 + 624 + 32 + 2 + 7 = 666.

It is not a de Polignac number, because 16243227 - 2² = 16243223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 16243227.

It is not an unprimeable number, because it can be changed into a prime (16243223) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26727 + ... + 27327.

It is an arithmetic number, because the mean of its divisors is an integer number (505680).

Almost surely, 2^16243227 is an apocalyptic number.

16243227 is a deficient number, since it is larger than the sum of its proper divisors (16120293).

16243227 is a wasteful number, since it uses less digits than its factorization.

16243227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641 (or 635 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 16243227 is about 4030.2886993366. The cubic root of 16243227 is about 253.2546556615.

Adding to 16243227 its reverse (72234261), we get a palindrome (88477488).

It can be divided in two parts, 1624 and 3227, that added together give a triangular number (4851 = T₉₈).

The spelling of 16243227 in words is "sixteen million, two hundred forty-three thousand, two hundred twenty-seven".