428271 has 4 divisors (see below), whose sum is σ = 571032. Its totient is φ = 285512.

The previous prime is 428251. The next prime is 428273. The reversal of 428271 is 172824.

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 428271 - 2⁷ = 428143 is a prime.

It is a D-number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428273) 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, 71376 + ... + 71381.

It is an arithmetic number, because the mean of its divisors is an integer number (142758).

2⁴²⁸²⁷¹ is an apocalyptic number.

428271 is a deficient number, since it is larger than the sum of its proper divisors (142761).

428271 is a wasteful number, since it uses less digits than its factorization.

428271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142760.

The product of its digits is 896, while the sum is 24.

The square root of 428271 is about 654.4241743701. The cubic root of 428271 is about 75.3771227562.

The spelling of 428271 in words is "four hundred twenty-eight thousand, two hundred seventy-one".