428814 has 20 divisors (see below), whose sum is σ = 961224. Its totient is φ = 142884.

The previous prime is 428809. The next prime is 428833. The reversal of 428814 is 418824.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 428814.

It is an unprimeable number.

428814 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1162 + ... + 1485.

2⁴²⁸⁸¹⁴ is an apocalyptic number.

428814 is an abundant number, since it is smaller than the sum of its proper divisors (532410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

428814 is a wasteful number, since it uses less digits than its factorization.

428814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2661 (or 2652 counting only the distinct ones).

The product of its digits is 2048, while the sum is 27.

The square root of 428814 is about 654.8389114889. The cubic root of 428814 is about 75.4089659051.

The spelling of 428814 in words is "four hundred twenty-eight thousand, eight hundred fourteen".