728897 has 12 divisors (see below), whose sum is σ = 834480. Its totient is φ = 634608.

The previous prime is 728891. The next prime is 728899. The reversal of 728897 is 798827.

728897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 728897 - 2⁴ = 728881 is a prime.

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

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3098 + ... + 3324.

It is an arithmetic number, because the mean of its divisors is an integer number (69540).

2⁷²⁸⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

728897 is a deficient number, since it is larger than the sum of its proper divisors (105583).

728897 is a wasteful number, since it uses less digits than its factorization.

728897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272 (or 259 counting only the distinct ones).

The product of its digits is 56448, while the sum is 41.

The square root of 728897 is about 853.7546485964. The cubic root of 728897 is about 89.9957611172.

The spelling of 728897 in words is "seven hundred twenty-eight thousand, eight hundred ninety-seven".