728554900 has 72 divisors (see below), whose sum is σ = 1660143744. Its totient is φ = 276988800.

The previous prime is 728554843. The next prime is 728554991. The reversal of 728554900 is 9455827.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 396985 + ... + 398815.

It is an arithmetic number, because the mean of its divisors is an integer number (23057552).

Almost surely, 2^728554900 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 728554900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (830071872).

728554900 is an abundant number, since it is smaller than the sum of its proper divisors (931588844).

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

728554900 is a wasteful number, since it uses less digits than its factorization.

728554900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2041 (or 2034 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 728554900 is about 26991.7561488689. The cubic root of 728554900 is about 899.8167939844.

The spelling of 728554900 in words is "seven hundred twenty-eight million, five hundred fifty-four thousand, nine hundred".