426321688 has 16 divisors (see below), whose sum is σ = 860842080. Its totient is φ = 196763808.

The previous prime is 426321667. The next prime is 426321697. The reversal of 426321688 is 886123624.

It is a self number, because there is not a number n which added to its sum of digits gives 426321688.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2049520 + ... + 2049727.

It is an arithmetic number, because the mean of its divisors is an integer number (53802630).

Almost surely, 2^426321688 is an apocalyptic number.

It is an amenable number.

426321688 is an abundant number, since it is smaller than the sum of its proper divisors (434520392).

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

426321688 is a wasteful number, since it uses less digits than its factorization.

426321688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4099266 (or 4099262 counting only the distinct ones).

The product of its digits is 110592, while the sum is 40.

The square root of 426321688 is about 20647.5588871905. The cubic root of 426321688 is about 752.6258700496.

The spelling of 426321688 in words is "four hundred twenty-six million, three hundred twenty-one thousand, six hundred eighty-eight".