428822 has 8 divisors (see below), whose sum is σ = 648000. Its totient is φ = 212824.

The previous prime is 428809. The next prime is 428833. The reversal of 428822 is 228824.

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

It is a junction number, because it is equal to n+sod(n) for n = 428791 and 428800.

It is a congruent number.

It is an unprimeable number.

428822 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 3 ways as a sum of consecutive naturals, for example, 422 + ... + 1017.

It is an arithmetic number, because the mean of its divisors is an integer number (81000).

2⁴²⁸⁸²² is an apocalyptic number.

428822 is a deficient number, since it is larger than the sum of its proper divisors (219178).

428822 is a wasteful number, since it uses less digits than its factorization.

428822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1590.

The product of its digits is 2048, while the sum is 26.

The square root of 428822 is about 654.8450198329. The cubic root of 428822 is about 75.4094348481.

The spelling of 428822 in words is "four hundred twenty-eight thousand, eight hundred twenty-two".