728486415491 has 8 divisors (see below), whose sum is σ = 771712062480. Its totient is φ = 685749194208.

The previous prime is 728486415451. The next prime is 728486415497. The reversal of 728486415491 is 194514684827.

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

It is a cyclic number.

It is not a de Polignac number, because 728486415491 - 2⁶ = 728486415427 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 728486415491.

It is not an unprimeable number, because it can be changed into a prime (728486415497) 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, 122103356 + ... + 122109321.

It is an arithmetic number, because the mean of its divisors is an integer number (96464007810).

Almost surely, 2^728486415491 is an apocalyptic number.

728486415491 is a deficient number, since it is larger than the sum of its proper divisors (43225646989).

728486415491 is a wasteful number, since it uses less digits than its factorization.

728486415491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244212853.

The product of its digits is 15482880, while the sum is 59.

The spelling of 728486415491 in words is "seven hundred twenty-eight billion, four hundred eighty-six million, four hundred fifteen thousand, four hundred ninety-one".