428323 has 8 divisors (see below), whose sum is σ = 501248. Its totient is φ = 358344.

The previous prime is 428303. The next prime is 428339. The reversal of 428323 is 323824.

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

It is not a de Polignac number, because 428323 - 2¹⁷ = 297251 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 428294 and 428303.

It is not an unprimeable number, because it can be changed into a prime (428303) 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, 411 + ... + 1012.

It is an arithmetic number, because the mean of its divisors is an integer number (62656).

2⁴²⁸³²³ is an apocalyptic number.

428323 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

428323 is a deficient number, since it is larger than the sum of its proper divisors (72925).

428323 is a wasteful number, since it uses less digits than its factorization.

428323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1473.

The product of its digits is 1152, while the sum is 22.

The square root of 428323 is about 654.4639027479. The cubic root of 428323 is about 75.3801733572.

The spelling of 428323 in words is "four hundred twenty-eight thousand, three hundred twenty-three".