428871 has 8 divisors (see below), whose sum is σ = 581760. Its totient is φ = 280952.

The previous prime is 428863. The next prime is 428873. The reversal of 428871 is 178824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 428871 - 2³ = 428863 is a prime.

428871 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1035 + ... + 1388.

It is an arithmetic number, because the mean of its divisors is an integer number (72720).

2⁴²⁸⁸⁷¹ is an apocalyptic number.

428871 is a deficient number, since it is larger than the sum of its proper divisors (152889).

428871 is a wasteful number, since it uses less digits than its factorization.

428871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2485.

The product of its digits is 3584, while the sum is 30.

The square root of 428871 is about 654.8824321968. The cubic root of 428871 is about 75.4123069968.

Subtracting from 428871 its reverse (178824), we obtain a cube (250047 = 63³).

The spelling of 428871 in words is "four hundred twenty-eight thousand, eight hundred seventy-one".