426856 has 16 divisors (see below), whose sum is σ = 807300. Its totient is φ = 211584.

The previous prime is 426841. The next prime is 426859. The reversal of 426856 is 658624.

It can be written as a sum of positive squares in 2 ways, for example, as 422500 + 4356 = 650^2 + 66^2 .

It is a super-3 number, since 3×426856³ = 233327230295490048, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (426859) by changing a digit.

426856 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 3 ways as a sum of consecutive naturals, for example, 1716 + ... + 1948.

2⁴²⁶⁸⁵⁶ is an apocalyptic number.

It is an amenable number.

426856 is a deficient number, since it is larger than the sum of its proper divisors (380444).

426856 is a wasteful number, since it uses less digits than its factorization.

426856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468 (or 464 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 426856 is about 653.3421768109. The cubic root of 426856 is about 75.2940162568.

The spelling of 426856 in words is "four hundred twenty-six thousand, eight hundred fifty-six".