728208647498 has 8 divisors (see below), whose sum is σ = 1156566675492. Its totient is φ = 342686422336.

The previous prime is 728208647497. The next prime is 728208647501. The reversal of 728208647498 is 894746802827.

It can be written as a sum of positive squares in 2 ways, for example, as 649582805089 + 78625842409 = 805967^2 + 280403^2 .

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

It is not an unprimeable number, because it can be changed into a prime (728208647497) 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, 10708950665 + ... + 10708950732.

Almost surely, 2^728208647498 is an apocalyptic number.

728208647498 is a deficient number, since it is larger than the sum of its proper divisors (428358027994).

728208647498 is a wasteful number, since it uses less digits than its factorization.

728208647498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21417901416.

The product of its (nonzero) digits is 86704128, while the sum is 65.

The spelling of 728208647498 in words is "seven hundred twenty-eight billion, two hundred eight million, six hundred forty-seven thousand, four hundred ninety-eight".