428829 has 8 divisors (see below), whose sum is σ = 575232. Its totient is φ = 284160.

The previous prime is 428809. The next prime is 428833. The reversal of 428829 is 928824.

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

It is not a de Polignac number, because 428829 - 2⁵ = 428797 is a prime.

It is a super-2 number, since 2×428829² = 367788622482, which contains 22 as substring.

428829 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 428829.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428809) 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, 349 + ... + 989.

It is an arithmetic number, because the mean of its divisors is an integer number (71904).

2⁴²⁸⁸²⁹ is an apocalyptic number.

It is an amenable number.

428829 is a deficient number, since it is larger than the sum of its proper divisors (146403).

428829 is a wasteful number, since it uses less digits than its factorization.

428829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867.

The product of its digits is 9216, while the sum is 33.

The square root of 428829 is about 654.8503645872. The cubic root of 428829 is about 75.4098451685.

The spelling of 428829 in words is "four hundred twenty-eight thousand, eight hundred twenty-nine".