728573847 has 8 divisors (see below), whose sum is σ = 982347120. Its totient is φ = 480258240.

The previous prime is 728573843. The next prime is 728573851. The reversal of 728573847 is 748375827.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (728573843) and next prime (728573851).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 728573847 - 2² = 728573843 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 728573847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728573843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1364104 + ... + 1364637.

It is an arithmetic number, because the mean of its divisors is an integer number (122793390).

Almost surely, 2^728573847 is an apocalyptic number.

728573847 is a deficient number, since it is larger than the sum of its proper divisors (253773273).

728573847 is a wasteful number, since it uses less digits than its factorization.

728573847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2728833.

The product of its digits is 2634240, while the sum is 51.

The square root of 728573847 is about 26992.1071241206. The cubic root of 728573847 is about 899.8245942115.

The spelling of 728573847 in words is "seven hundred twenty-eight million, five hundred seventy-three thousand, eight hundred forty-seven".