728197780112 has 60 divisors (see below), whose sum is σ = 1642029426828. Its totient is φ = 311528448000.

The previous prime is 728197780109. The next prime is 728197780151. The reversal of 728197780112 is 211087791827.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 319130087056 + 409067693056 = 564916^2 + 639584^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11029889 + ... + 11095712.

Almost surely, 2^728197780112 is an apocalyptic number.

It is an amenable number.

728197780112 is an abundant number, since it is smaller than the sum of its proper divisors (913831646716).

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

728197780112 is a wasteful number, since it uses less digits than its factorization.

728197780112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22125648 (or 22125631 counting only the distinct ones).

The product of its (nonzero) digits is 790272, while the sum is 53.

The spelling of 728197780112 in words is "seven hundred twenty-eight billion, one hundred ninety-seven million, seven hundred eighty thousand, one hundred twelve".