797728 has 24 divisors (see below), whose sum is σ = 1592892. Its totient is φ = 393216.

The previous prime is 797711. The next prime is 797729. The reversal of 797728 is 827797.

It can be written as a sum of positive squares in 2 ways, for example, as 725904 + 71824 = 852^2 + 268^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (797729) 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, 2976 + ... + 3232.

2⁷⁹⁷⁷²⁸ is an apocalyptic number.

It is an amenable number.

797728 is a deficient number, since it is larger than the sum of its proper divisors (795164).

797728 is a wasteful number, since it uses less digits than its factorization.

797728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364 (or 356 counting only the distinct ones).

The product of its digits is 49392, while the sum is 40.

The square root of 797728 is about 893.1562013444. The cubic root of 797728 is about 92.7438125984.

The spelling of 797728 in words is "seven hundred ninety-seven thousand, seven hundred twenty-eight".