428073 has 8 divisors (see below), whose sum is σ = 573888. Its totient is φ = 283824.

The previous prime is 428047. The next prime is 428083. The reversal of 428073 is 370824.

428073 is nontrivially palindromic in base 8.

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

It is not a de Polignac number, because 428073 - 2⁵ = 428041 is a prime.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 428073.

It is not an unprimeable number, because it can be changed into a prime (428003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 636 + ... + 1122.

It is an arithmetic number, because the mean of its divisors is an integer number (71736).

2⁴²⁸⁰⁷³ is an apocalyptic number.

It is an amenable number.

428073 is a deficient number, since it is larger than the sum of its proper divisors (145815).

428073 is a wasteful number, since it uses less digits than its factorization.

428073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 428073 is about 654.2728788510. The cubic root of 428073 is about 75.3655047457.

Adding to 428073 its reverse (370824), we get a palindrome (798897).

The spelling of 428073 in words is "four hundred twenty-eight thousand, seventy-three".