428534 has 8 divisors (see below), whose sum is σ = 660288. Its totient is φ = 208440.

The previous prime is 428531. The next prime is 428539. The reversal of 428534 is 435824.

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

It is a Curzon number.

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 3 ways as a sum of consecutive naturals, for example, 2822 + ... + 2969.

It is an arithmetic number, because the mean of its divisors is an integer number (82536).

2⁴²⁸⁵³⁴ is an apocalyptic number.

428534 is a deficient number, since it is larger than the sum of its proper divisors (231754).

428534 is a wasteful number, since it uses less digits than its factorization.

428534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5830.

The product of its digits is 3840, while the sum is 26.

The square root of 428534 is about 654.6250835402. The cubic root of 428534 is about 75.3925492242.

The spelling of 428534 in words is "four hundred twenty-eight thousand, five hundred thirty-four".