728907997662 has 64 divisors (see below), whose sum is σ = 1751694336000. Its totient is φ = 223340925024.

The previous prime is 728907997651. The next prime is 728907997667. The reversal of 728907997662 is 266799709827.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728907997667) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2004462 + ... + 2340017.

It is an arithmetic number, because the mean of its divisors is an integer number (27370224000).

Almost surely, 2^728907997662 is an apocalyptic number.

728907997662 is an abundant number, since it is smaller than the sum of its proper divisors (1022786338338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

728907997662 is a wasteful number, since it uses less digits than its factorization.

728907997662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4344742 (or 4344736 counting only the distinct ones).

The product of its (nonzero) digits is 288054144, while the sum is 72.

The spelling of 728907997662 in words is "seven hundred twenty-eight billion, nine hundred seven million, nine hundred ninety-seven thousand, six hundred sixty-two".