16428271 has 4 divisors (see below), whose sum is σ = 16546600. Its totient is φ = 16309944.

The previous prime is 16428229. The next prime is 16428277. The reversal of 16428271 is 17282461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16428271 - 2⁹ = 16427759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16428277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58956 + ... + 59233.

It is an arithmetic number, because the mean of its divisors is an integer number (4136650).

Almost surely, 2^16428271 is an apocalyptic number.

16428271 is a deficient number, since it is larger than the sum of its proper divisors (118329).

16428271 is a wasteful number, since it uses less digits than its factorization.

16428271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118328.

The product of its digits is 5376, while the sum is 31.

The square root of 16428271 is about 4053.1803562141. The cubic root of 16428271 is about 254.2127250521.

The spelling of 16428271 in words is "sixteen million, four hundred twenty-eight thousand, two hundred seventy-one".