726994767728 has 40 divisors (see below), whose sum is σ = 1482889374720. Its totient is φ = 344318869440.

The previous prime is 726994767727. The next prime is 726994767773. The reversal of 726994767728 is 827767499627.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726994767727) 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, 2116343 + ... + 2435753.

It is an arithmetic number, because the mean of its divisors is an integer number (37072234368).

Almost surely, 2^726994767728 is an apocalyptic number.

It is an amenable number.

726994767728 is an abundant number, since it is smaller than the sum of its proper divisors (755894606992).

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

726994767728 is a wasteful number, since it uses less digits than its factorization.

726994767728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326925 (or 326919 counting only the distinct ones).

The product of its digits is 896168448, while the sum is 74.

The spelling of 726994767728 in words is "seven hundred twenty-six billion, nine hundred ninety-four million, seven hundred sixty-seven thousand, seven hundred twenty-eight".