728723000 has 32 divisors (see below), whose sum is σ = 1705214160. Its totient is φ = 291488800.

The previous prime is 728722997. The next prime is 728723033. The reversal of 728723000 is 327827.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363362 + ... + 365361.

Almost surely, 2^728723000 is an apocalyptic number.

It is an amenable number.

728723000 is an abundant number, since it is smaller than the sum of its proper divisors (976491160).

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

728723000 is a wasteful number, since it uses less digits than its factorization.

728723000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728744 (or 728730 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 728723000 is about 26994.8698829981. The cubic root of 728723000 is about 899.8859937895.

The spelling of 728723000 in words is "seven hundred twenty-eight million, seven hundred twenty-three thousand".