728218884 has 48 divisors (see below), whose sum is σ = 1782587520. Its totient is φ = 231060480.

The previous prime is 728218853. The next prime is 728218891. The reversal of 728218884 is 488812827.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9972 + ... + 39444.

It is an arithmetic number, because the mean of its divisors is an integer number (37137240).

Almost surely, 2^728218884 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 728218884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (891293760).

728218884 is an abundant number, since it is smaller than the sum of its proper divisors (1054368636).

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

728218884 is a wasteful number, since it uses less digits than its factorization.

728218884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29580 (or 29578 counting only the distinct ones).

The product of its digits is 458752, while the sum is 48.

The square root of 728218884 is about 26985.5310120072. The cubic root of 728218884 is about 899.6784382090.

The spelling of 728218884 in words is "seven hundred twenty-eight million, two hundred eighteen thousand, eight hundred eighty-four".