428537 has 4 divisors (see below), whose sum is σ = 431760. Its totient is φ = 425316.

The previous prime is 428531. The next prime is 428539. The reversal of 428537 is 735824.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 428537 - 2⁶ = 428473 is a prime.

It is a d-powerful number, because it can be written as 4⁹ + 2¹⁷ + 5³ + 8⁵ + 3³ + 7⁴ .

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 428537.

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, 1403 + ... + 1680.

It is an arithmetic number, because the mean of its divisors is an integer number (107940).

2⁴²⁸⁵³⁷ is an apocalyptic number.

It is an amenable number.

428537 is a deficient number, since it is larger than the sum of its proper divisors (3223).

428537 is a wasteful number, since it uses less digits than its factorization.

428537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3222.

The product of its digits is 6720, while the sum is 29.

The square root of 428537 is about 654.6273749241. The cubic root of 428537 is about 75.3927251551.

The spelling of 428537 in words is "four hundred twenty-eight thousand, five hundred thirty-seven".