426428518 has 12 divisors (see below), whose sum is σ = 650826540. Its totient is φ = 209490200.

The previous prime is 426428507. The next prime is 426428521. The reversal of 426428518 is 815824624.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 223368 + ... + 225268.

It is an arithmetic number, because the mean of its divisors is an integer number (54235545).

Almost surely, 2^426428518 is an apocalyptic number.

426428518 is a deficient number, since it is larger than the sum of its proper divisors (224398022).

426428518 is an frugal number, since it uses more digits than its factorization.

426428518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3863 (or 1962 counting only the distinct ones).

The product of its digits is 122880, while the sum is 40.

The square root of 426428518 is about 20650.1457137716. The cubic root of 426428518 is about 752.6887304896.

The spelling of 426428518 in words is "four hundred twenty-six million, four hundred twenty-eight thousand, five hundred eighteen".