426688 has 28 divisors (see below), whose sum is σ = 868680. Its totient is φ = 207872.

The previous prime is 426661. The next prime is 426691. The reversal of 426688 is 886624.

It is an unprimeable number.

426688 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, 3720 + ... + 3832.

2⁴²⁶⁶⁸⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 426688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (434340).

426688 is an abundant number, since it is smaller than the sum of its proper divisors (441992).

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

426688 is a wasteful number, since it uses less digits than its factorization.

426688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184 (or 174 counting only the distinct ones).

The product of its digits is 18432, while the sum is 34.

The square root of 426688 is about 653.2135944697. The cubic root of 426688 is about 75.2841370043.

The spelling of 426688 in words is "four hundred twenty-six thousand, six hundred eighty-eight".