5218390 has 16 divisors (see below), whose sum is σ = 9482832. Its totient is φ = 2067424.

The previous prime is 5218361. The next prime is 5218391. The reversal of 5218390 is 938125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5218391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1369 + ... + 3508.

It is an arithmetic number, because the mean of its divisors is an integer number (592677).

Almost surely, 2^5218390 is an apocalyptic number.

5218390 is a deficient number, since it is larger than the sum of its proper divisors (4264442).

5218390 is a wasteful number, since it uses less digits than its factorization.

5218390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4991.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 5218390 is about 2284.3795656589. The cubic root of 5218390 is about 173.4518133089.

It can be divided in two parts, 521 and 8390, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 5218390 in words is "five million, two hundred eighteen thousand, three hundred ninety".