728896 has 28 divisors (see below), whose sum is σ = 1654048. Its totient is φ = 312192.

The previous prime is 728891. The next prime is 728899. The reversal of 728896 is 698827.

It is a tau number, because it is divible by the number of its divisors (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728891) by changing a digit.

728896 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 366 + ... + 1261.

2⁷²⁸⁸⁹⁶ is an apocalyptic number.

It is an amenable number.

728896 is an abundant number, since it is smaller than the sum of its proper divisors (925152).

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

728896 is a wasteful number, since it uses less digits than its factorization.

728896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1646 (or 1636 counting only the distinct ones).

The product of its digits is 48384, while the sum is 40.

The square root of 728896 is about 853.7540629479. The cubic root of 728896 is about 89.9957199611.

The spelling of 728896 in words is "seven hundred twenty-eight thousand, eight hundred ninety-six".