518354420 has 24 divisors (see below), whose sum is σ = 1099770504. Its totient is φ = 205203456.

The previous prime is 518354377. The next prime is 518354479. The reversal of 518354420 is 24453815.

It can be written as a sum of positive squares in 4 ways, for example, as 4153444 + 514200976 = 2038^2 + 22676^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131657 + ... + 135536.

It is an arithmetic number, because the mean of its divisors is an integer number (45823771).

Almost surely, 2^518354420 is an apocalyptic number.

It is an amenable number.

518354420 is an abundant number, since it is smaller than the sum of its proper divisors (581416084).

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

518354420 is a wasteful number, since it uses less digits than its factorization.

518354420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267299 (or 267297 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 518354420 is about 22767.3981824889. The cubic root of 518354420 is about 803.2959956170.

The spelling of 518354420 in words is "five hundred eighteen million, three hundred fifty-four thousand, four hundred twenty".