518248340 has 12 divisors (see below), whose sum is σ = 1088321556. Its totient is φ = 207299328.

The previous prime is 518248333. The next prime is 518248343. The reversal of 518248340 is 43842815.

It can be written as a sum of positive squares in 2 ways, for example, as 362597764 + 155650576 = 19042^2 + 12476^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 518248340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (518248343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12956189 + ... + 12956228.

It is an arithmetic number, because the mean of its divisors is an integer number (90693463).

Almost surely, 2^518248340 is an apocalyptic number.

It is an amenable number.

518248340 is an abundant number, since it is smaller than the sum of its proper divisors (570073216).

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

518248340 is a wasteful number, since it uses less digits than its factorization.

518248340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25912426 (or 25912424 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 518248340 is about 22765.0684163259. The cubic root of 518248340 is about 803.2411943398.

The spelling of 518248340 in words is "five hundred eighteen million, two hundred forty-eight thousand, three hundred forty".