728550447 has 8 divisors (see below), whose sum is σ = 975643440. Its totient is φ = 483578880.

The previous prime is 728550401. The next prime is 728550451. The reversal of 728550447 is 744055827.

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

It is not a de Polignac number, because 728550447 - 2¹¹ = 728548399 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 728550399 and 728550408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728550457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 529554 + ... + 530927.

It is an arithmetic number, because the mean of its divisors is an integer number (121955430).

Almost surely, 2^728550447 is an apocalyptic number.

728550447 is a deficient number, since it is larger than the sum of its proper divisors (247092993).

728550447 is a wasteful number, since it uses less digits than its factorization.

728550447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060713.

The product of its (nonzero) digits is 313600, while the sum is 42.

The square root of 728550447 is about 26991.6736605939. The cubic root of 728550447 is about 899.8149607241.

The spelling of 728550447 in words is "seven hundred twenty-eight million, five hundred fifty thousand, four hundred forty-seven".