518490 has 48 divisors (see below), whose sum is σ = 1542528. Its totient is φ = 118368.

The previous prime is 518473. The next prime is 518509. The reversal of 518490 is 94815.

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, 219 + ... + 1041.

It is an arithmetic number, because the mean of its divisors is an integer number (32136).

2⁵¹⁸⁴⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 518490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (771264).

518490 is an abundant number, since it is smaller than the sum of its proper divisors (1024038).

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

518490 is a wasteful number, since it uses less digits than its factorization.

518490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843 (or 840 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 518490 is about 720.0624972876. The cubic root of 518490 is about 80.3366025808.

The spelling of 518490 in words is "five hundred eighteen thousand, four hundred ninety".