728655500 has 48 divisors (see below), whose sum is σ = 1596058464. Its totient is φ = 290606400.

The previous prime is 728655493. The next prime is 728655503. The reversal of 728655500 is 5556827.

It is not an unprimeable number, because it can be changed into a prime (728655503) 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, 184547 + ... + 188453.

It is an arithmetic number, because the mean of its divisors is an integer number (33251218).

Almost surely, 2^728655500 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 728655500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (798029232).

728655500 is an abundant number, since it is smaller than the sum of its proper divisors (867402964).

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

728655500 is a wasteful number, since it uses less digits than its factorization.

728655500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4299 (or 4287 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 38.

The square root of 728655500 is about 26993.6196164946. The cubic root of 728655500 is about 899.8582081150.

The spelling of 728655500 in words is "seven hundred twenty-eight million, six hundred fifty-five thousand, five hundred".