426440688 has 40 divisors (see below), whose sum is σ = 1131417168. Its totient is φ = 138304512.

The previous prime is 426440687. The next prime is 426440719. The reversal of 426440688 is 886044624.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426440687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118281 + ... + 121832.

Almost surely, 2^426440688 is an apocalyptic number.

426440688 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

426440688 is an abundant number, since it is smaller than the sum of its proper divisors (704976480).

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

426440688 is a wasteful number, since it uses less digits than its factorization.

426440688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240161 (or 240155 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 42.

The square root of 426440688 is about 20650.4403827134. The cubic root of 426440688 is about 752.6958908415.

The spelling of 426440688 in words is "four hundred twenty-six million, four hundred forty thousand, six hundred eighty-eight".