859428 has 18 divisors (see below), whose sum is σ = 2172534. Its totient is φ = 286464.

The previous prime is 859423. The next prime is 859433. The reversal of 859428 is 824958.

It is an interprime number because it is at equal distance from previous prime (859423) and next prime (859433).

It can be written as a sum of positive squares in only one way, i.e., 580644 + 278784 = 762^2 + 528^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 23873 = 859428 / (8 + 5 + 9 + 4 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 859392 and 859401.

It is not an unprimeable number, because it can be changed into a prime (859423) by changing a digit.

859428 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 in 5 ways as a sum of consecutive naturals, for example, 11901 + ... + 11972.

2⁸⁵⁹⁴²⁸ is an apocalyptic number.

It is an amenable number.

859428 is an abundant number, since it is smaller than the sum of its proper divisors (1313106).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

859428 is a wasteful number, since it uses less digits than its factorization.

859428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23883 (or 23878 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 859428 is about 927.0533965204. The cubic root of 859428 is about 95.0757659659.

The spelling of 859428 in words is "eight hundred fifty-nine thousand, four hundred twenty-eight".