428575 has 24 divisors (see below), whose sum is σ = 634880. Its totient is φ = 280800.

The previous prime is 428569. The next prime is 428579. The reversal of 428575 is 575824.

It is not a de Polignac number, because 428575 - 2³ = 428567 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428579) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5386 + ... + 5464.

2⁴²⁸⁵⁷⁵ is an apocalyptic number.

428575 is a deficient number, since it is larger than the sum of its proper divisors (206305).

428575 is a wasteful number, since it uses less digits than its factorization.

428575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 122 counting only the distinct ones).

The product of its digits is 11200, while the sum is 31.

The square root of 428575 is about 654.6563984259. The cubic root of 428575 is about 75.3949535422.

The spelling of 428575 in words is "four hundred twenty-eight thousand, five hundred seventy-five".