5218830 has 80 divisors (see below), whose sum is σ = 14897520. Its totient is φ = 1306368.

The previous prime is 5218823. The next prime is 5218853. The reversal of 5218830 is 388125.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 5218794 and 5218803.

It is a congruent number.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 13581 + ... + 13959.

It is an arithmetic number, because the mean of its divisors is an integer number (186219).

Almost surely, 2^5218830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5218830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7448760).

5218830 is an abundant number, since it is smaller than the sum of its proper divisors (9678690).

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

5218830 is a wasteful number, since it uses less digits than its factorization.

5218830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415 (or 406 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 5218830 is about 2284.4758698660. The cubic root of 5218830 is about 173.4566881619.

The spelling of 5218830 in words is "five million, two hundred eighteen thousand, eight hundred thirty".