858428 has 6 divisors (see below), whose sum is σ = 1502256. Its totient is φ = 429212.

The previous prime is 858427. The next prime is 858433. The reversal of 858428 is 824858.

858428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 858428.

It is not an unprimeable number, because it can be changed into a prime (858427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107300 + ... + 107307.

It is an arithmetic number, because the mean of its divisors is an integer number (250376).

2⁸⁵⁸⁴²⁸ is an apocalyptic number.

It is an amenable number.

858428 is a deficient number, since it is larger than the sum of its proper divisors (643828).

858428 is a wasteful number, since it uses less digits than its factorization.

858428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214611 (or 214609 counting only the distinct ones).

The product of its digits is 20480, while the sum is 35.

The square root of 858428 is about 926.5138962800. The cubic root of 858428 is about 95.0388760557.

The spelling of 858428 in words is "eight hundred fifty-eight thousand, four hundred twenty-eight".