428570 has 16 divisors (see below), whose sum is σ = 817128. Its totient is φ = 161280.

The previous prime is 428569. The next prime is 428579. The reversal of 428570 is 75824.

It can be written as a sum of positive squares in 4 ways, for example, as 253009 + 175561 = 503^2 + 419^2 .

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 7 ways as a sum of consecutive naturals, for example, 1091 + ... + 1430.

2⁴²⁸⁵⁷⁰ is an apocalyptic number.

428570 is a deficient number, since it is larger than the sum of its proper divisors (388558).

428570 is a wasteful number, since it uses less digits than its factorization.

428570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2545.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 428570 is about 654.6525796176. The cubic root of 428570 is about 75.3946603409.

The spelling of 428570 in words is "four hundred twenty-eight thousand, five hundred seventy".