728269648 has 10 divisors (see below), whose sum is σ = 1411022474. Its totient is φ = 364134816.

The previous prime is 728269621. The next prime is 728269651. The reversal of 728269648 is 846962827.

It can be written as a sum of positive squares in only one way, i.e., 368332864 + 359936784 = 19192^2 + 18972^2 .

It is a junction number, because it is equal to n+sod(n) for n = 728269595 and 728269604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22758411 + ... + 22758442.

Almost surely, 2^728269648 is an apocalyptic number.

It is an amenable number.

728269648 is a deficient number, since it is larger than the sum of its proper divisors (682752826).

728269648 is a wasteful number, since it uses less digits than its factorization.

728269648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45516861 (or 45516855 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 52.

The square root of 728269648 is about 26986.4715737349. The cubic root of 728269648 is about 899.6993431942.

The spelling of 728269648 in words is "seven hundred twenty-eight million, two hundred sixty-nine thousand, six hundred forty-eight".