426818 has 16 divisors (see below), whose sum is σ = 749760. Its totient is φ = 178416.

The previous prime is 426799. The next prime is 426841. The reversal of 426818 is 818624.

It is a Curzon number.

It is an unprimeable number.

426818 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248 + ... + 956.

It is an arithmetic number, because the mean of its divisors is an integer number (46860).

2⁴²⁶⁸¹⁸ is an apocalyptic number.

426818 is a deficient number, since it is larger than the sum of its proper divisors (322942).

426818 is a wasteful number, since it uses less digits than its factorization.

426818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761.

The product of its digits is 3072, while the sum is 29.

The square root of 426818 is about 653.3130949246. The cubic root of 426818 is about 75.2917818908.

The spelling of 426818 in words is "four hundred twenty-six thousand, eight hundred eighteen".