728803 has 4 divisors (see below), whose sum is σ = 742608. Its totient is φ = 715000.

The previous prime is 728771. The next prime is 728809. The reversal of 728803 is 308827.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 728803 - 2⁵ = 728771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (728809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6823 + ... + 6928.

It is an arithmetic number, because the mean of its divisors is an integer number (185652).

2⁷²⁸⁸⁰³ is an apocalyptic number.

728803 is a deficient number, since it is larger than the sum of its proper divisors (13805).

728803 is a wasteful number, since it uses less digits than its factorization.

728803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13804.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 728803 is about 853.6995958767. The cubic root of 728803 is about 89.9918922737.

The spelling of 728803 in words is "seven hundred twenty-eight thousand, eight hundred three".