5218713828 has 18 divisors (see below), whose sum is σ = 13191748934. Its totient is φ = 1739571264.

The previous prime is 5218713811. The next prime is 5218713859. The reversal of 5218713828 is 8283178125.

5218713828 is a `hidden beast` number, since 521 + 8 + 71 + 38 + 28 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4671995904 + 546717924 = 68352^2 + 23382^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72482101 + ... + 72482172.

Almost surely, 2^5218713828 is an apocalyptic number.

It is an amenable number.

5218713828 is an abundant number, since it is smaller than the sum of its proper divisors (7973035106).

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

5218713828 is a wasteful number, since it uses less digits than its factorization.

5218713828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144964283 (or 144964278 counting only the distinct ones).

The product of its digits is 215040, while the sum is 45.

The square root of 5218713828 is about 72240.6660268301. Note that the first 3 decimals coincide. The cubic root of 5218713828 is about 1734.5540109440.

The spelling of 5218713828 in words is "five billion, two hundred eighteen million, seven hundred thirteen thousand, eight hundred twenty-eight".