859240 has 16 divisors (see below), whose sum is σ = 1933380. Its totient is φ = 343680.

The previous prime is 859223. The next prime is 859249. The reversal of 859240 is 42958.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 857476 + 1764 = 926^2 + 42^2 .

It is a junction number, because it is equal to n+sod(n) for n = 859199 and 859208.

It is not an unprimeable number, because it can be changed into a prime (859249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10701 + ... + 10780.

2⁸⁵⁹²⁴⁰ is an apocalyptic number.

It is an amenable number.

859240 is an abundant number, since it is smaller than the sum of its proper divisors (1074140).

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

859240 is a wasteful number, since it uses less digits than its factorization.

859240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21492 (or 21488 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 859240 is about 926.9519944420. The cubic root of 859240 is about 95.0688328478.

The spelling of 859240 in words is "eight hundred fifty-nine thousand, two hundred forty".