728847 has 24 divisors (see below), whose sum is σ = 1257984. Its totient is φ = 397584.

The previous prime is 728843. The next prime is 728851. The reversal of 728847 is 748827.

It is an interprime number because it is at equal distance from previous prime (728843) and next prime (728851).

It is not a de Polignac number, because 728847 - 2² = 728843 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728843) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1198 + ... + 1700.

It is an arithmetic number, because the mean of its divisors is an integer number (52416).

2⁷²⁸⁸⁴⁷ is an apocalyptic number.

728847 is a deficient number, since it is larger than the sum of its proper divisors (529137).

728847 is a wasteful number, since it uses less digits than its factorization.

728847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539 (or 536 counting only the distinct ones).

The product of its digits is 25088, while the sum is 36.

The square root of 728847 is about 853.7253656768. The cubic root of 728847 is about 89.9937032632.

It can be divided in two parts, 728 and 847, that multiplied together give a palindrome (616616).

The spelling of 728847 in words is "seven hundred twenty-eight thousand, eight hundred forty-seven".