428258 has 4 divisors (see below), whose sum is σ = 642390. Its totient is φ = 214128.

The previous prime is 428251. The next prime is 428273. The reversal of 428258 is 852824.

428258 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 426409 + 1849 = 653^2 + 43^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 428258.

It is not an unprimeable number, because it can be changed into a prime (428251) by changing a digit.

428258 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107063 + ... + 107066.

2⁴²⁸²⁵⁸ is an apocalyptic number.

428258 is a deficient number, since it is larger than the sum of its proper divisors (214132).

428258 is a wasteful number, since it uses less digits than its factorization.

428258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214131.

The product of its digits is 5120, while the sum is 29.

The square root of 428258 is about 654.4142418988. The cubic root of 428258 is about 75.3763600674.

It can be divided in two parts, 428 and 258, that added together give a palindrome (686).

The spelling of 428258 in words is "four hundred twenty-eight thousand, two hundred fifty-eight".