428812 has 24 divisors (see below), whose sum is σ = 806400. Its totient is φ = 199056.

The previous prime is 428809. The next prime is 428833. The reversal of 428812 is 218824.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5389 + ... + 5467.

It is an arithmetic number, because the mean of its divisors is an integer number (33600).

2⁴²⁸⁸¹² is an apocalyptic number.

It is an amenable number.

428812 is a deficient number, since it is larger than the sum of its proper divisors (377588).

428812 is a wasteful number, since it uses less digits than its factorization.

428812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165 (or 163 counting only the distinct ones).

The product of its digits is 1024, while the sum is 25.

The square root of 428812 is about 654.8373843940. The cubic root of 428812 is about 75.4088486685.

The spelling of 428812 in words is "four hundred twenty-eight thousand, eight hundred twelve".