5270218728 has 64 divisors (see below), whose sum is σ = 13554034560. Its totient is φ = 1706432256.

The previous prime is 5270218699. The next prime is 5270218729. The reversal of 5270218728 is 8278120725.

It is a self number, because there is not a number n which added to its sum of digits gives 5270218728.

It is not an unprimeable number, because it can be changed into a prime (5270218729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 569950 + ... + 579122.

It is an arithmetic number, because the mean of its divisors is an integer number (211781790).

Almost surely, 2^5270218728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5270218728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6777017280).

5270218728 is an abundant number, since it is smaller than the sum of its proper divisors (8283815832).

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

5270218728 is a wasteful number, since it uses less digits than its factorization.

5270218728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9866 (or 9862 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 42.

The square root of 5270218728 is about 72596.2721356958. The cubic root of 5270218728 is about 1740.2416020705.

The spelling of 5270218728 in words is "five billion, two hundred seventy million, two hundred eighteen thousand, seven hundred twenty-eight".