518791428 has 72 divisors (see below), whose sum is σ = 1389489920. Its totient is φ = 162751680.

The previous prime is 518791379. The next prime is 518791439. The reversal of 518791428 is 824197815.

518791428 is a `hidden beast` number, since 518 + 7 + 91 + 42 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 104973 + ... + 109803.

Almost surely, 2^518791428 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 518791428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (694744960).

518791428 is an abundant number, since it is smaller than the sum of its proper divisors (870698492).

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

518791428 is a wasteful number, since it uses less digits than its factorization.

518791428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5017 (or 5012 counting only the distinct ones).

The product of its digits is 161280, while the sum is 45.

The square root of 518791428 is about 22776.9933924563. The cubic root of 518791428 is about 803.5216765777.

The spelling of 518791428 in words is "five hundred eighteen million, seven hundred ninety-one thousand, four hundred twenty-eight".