428597 has 4 divisors (see below), whose sum is σ = 461580. Its totient is φ = 395616.

The previous prime is 428579. The next prime is 428629. The reversal of 428597 is 795824.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 108241 + 320356 = 329^2 + 566^2 .

It is not a de Polignac number, because 428597 - 2¹⁴ = 412213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16472 + ... + 16497.

It is an arithmetic number, because the mean of its divisors is an integer number (115395).

2⁴²⁸⁵⁹⁷ is an apocalyptic number.

It is an amenable number.

428597 is a deficient number, since it is larger than the sum of its proper divisors (32983).

428597 is a wasteful number, since it uses less digits than its factorization.

428597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32982.

The product of its digits is 20160, while the sum is 35.

The square root of 428597 is about 654.6732009178. The cubic root of 428597 is about 75.3962436008.

The spelling of 428597 in words is "four hundred twenty-eight thousand, five hundred ninety-seven".