16228369 has 4 divisors (see below), whose sum is σ = 16380144. Its totient is φ = 16076596.

The previous prime is 16228361. The next prime is 16228397. The reversal of 16228369 is 96382261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96382261 = 4723 ⋅20407.

It is a cyclic number.

It is not a de Polignac number, because 16228369 - 2³ = 16228361 is a prime.

It is a super-2 number, since 2×16228369² = 526719920800322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16228361) by changing a digit.

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, 75727 + ... + 75940.

It is an arithmetic number, because the mean of its divisors is an integer number (4095036).

Almost surely, 2^16228369 is an apocalyptic number.

It is an amenable number.

16228369 is a deficient number, since it is larger than the sum of its proper divisors (151775).

16228369 is a wasteful number, since it uses less digits than its factorization.

16228369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151774.

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

The square root of 16228369 is about 4028.4449853510. Note that the first 3 decimals coincide. The cubic root of 16228369 is about 253.1774130960.

The spelling of 16228369 in words is "sixteen million, two hundred twenty-eight thousand, three hundred sixty-nine".