728573208 has 128 divisors (see below), whose sum is σ = 2096478720. Its totient is φ = 208834560.

The previous prime is 728573207. The next prime is 728573213. The reversal of 728573208 is 802375827.

It is a super-2 number, since 2×728573208² = 1061637838830822528, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 728573208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728573201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 588366 + ... + 589602.

It is an arithmetic number, because the mean of its divisors is an integer number (16378740).

Almost surely, 2^728573208 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 728573208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1048239360).

728573208 is an abundant number, since it is smaller than the sum of its proper divisors (1367905512).

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

728573208 is a wasteful number, since it uses less digits than its factorization.

728573208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1377 (or 1373 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 42.

The square root of 728573208 is about 26992.0952873244. The cubic root of 728573208 is about 899.8243311459.

The spelling of 728573208 in words is "seven hundred twenty-eight million, five hundred seventy-three thousand, two hundred eight".