428533 has 8 divisors (see below), whose sum is σ = 506880. Its totient is φ = 354480.

The previous prime is 428531. The next prime is 428539. The reversal of 428533 is 335824.

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

It is not a de Polignac number, because 428533 - 2¹ = 428531 is a prime.

It is a d-powerful number, because it can be written as 4⁸ + 2¹⁶ + 5⁶ + 8⁶ + 3² + 3⁹ .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 428498 and 428507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 853 + ... + 1258.

It is an arithmetic number, because the mean of its divisors is an integer number (63360).

2⁴²⁸⁵³³ is an apocalyptic number.

It is an amenable number.

428533 is a deficient number, since it is larger than the sum of its proper divisors (78347).

428533 is a wasteful number, since it uses less digits than its factorization.

428533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2147.

The product of its digits is 2880, while the sum is 25.

The square root of 428533 is about 654.6243197438. The cubic root of 428533 is about 75.3924905804.

It can be divided in two parts, 428 and 533, that added together give a square (961 = 31²).

The spelling of 428533 in words is "four hundred twenty-eight thousand, five hundred thirty-three".