6728517340 has 24 divisors (see below), whose sum is σ = 14511776832. Its totient is φ = 2618665920.

The previous prime is 6728517317. The next prime is 6728517347. The reversal of 6728517340 is 437158276.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6728517347) 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, 4545556 + ... + 4547035.

It is an arithmetic number, because the mean of its divisors is an integer number (604657368).

Almost surely, 2^6728517340 is an apocalyptic number.

It is an amenable number.

6728517340 is an abundant number, since it is smaller than the sum of its proper divisors (7783259492).

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

6728517340 is a wasteful number, since it uses less digits than its factorization.

6728517340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9092637 (or 9092635 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 43.

The square root of 6728517340 is about 82027.5401313486. The cubic root of 6728517340 is about 1887.8745214744.

The spelling of 6728517340 in words is "six billion, seven hundred twenty-eight million, five hundred seventeen thousand, three hundred forty".