428335 has 4 divisors (see below), whose sum is σ = 514008. Its totient is φ = 342664.

The previous prime is 428303. The next prime is 428339. The reversal of 428335 is 533824.

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

It is a cyclic number.

It is not a de Polignac number, because 428335 - 2⁵ = 428303 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 (428339) 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, 42829 + ... + 42838.

It is an arithmetic number, because the mean of its divisors is an integer number (128502).

2⁴²⁸³³⁵ is an apocalyptic number.

428335 is a deficient number, since it is larger than the sum of its proper divisors (85673).

428335 is an equidigital number, since it uses as much as digits as its factorization.

428335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85672.

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

The square root of 428335 is about 654.4730704926. The cubic root of 428335 is about 75.3808773069.

It can be divided in two parts, 428 and 335, that multiplied together give a triangular number (143380 = T₅₃₅).

The spelling of 428335 in words is "four hundred twenty-eight thousand, three hundred thirty-five".