728144284 has 48 divisors (see below), whose sum is σ = 1496121088. Its totient is φ = 303585408.

The previous prime is 728144279. The next prime is 728144303. The reversal of 728144284 is 482441827.

It is a congruent number.

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, 339664 + ... + 341800.

Almost surely, 2^728144284 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 728144284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (748060544).

728144284 is an abundant number, since it is smaller than the sum of its proper divisors (767976804).

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

728144284 is a wasteful number, since it uses less digits than its factorization.

728144284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2474 (or 2472 counting only the distinct ones).

The product of its digits is 114688, while the sum is 40.

The square root of 728144284 is about 26984.1487544077. The cubic root of 728144284 is about 899.6477156223.

The spelling of 728144284 in words is "seven hundred twenty-eight million, one hundred forty-four thousand, two hundred eighty-four".