6493812728 has 32 divisors (see below), whose sum is σ = 13883834160. Its totient is φ = 2820840960.

The previous prime is 6493812707. The next prime is 6493812737. The reversal of 6493812728 is 8272183946.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1834718 + ... + 1838253.

Almost surely, 2^6493812728 is an apocalyptic number.

6493812728 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

6493812728 is an abundant number, since it is smaller than the sum of its proper divisors (7390021432).

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

6493812728 is a wasteful number, since it uses less digits than its factorization.

6493812728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3673007 (or 3673003 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 50.

The square root of 6493812728 is about 80584.1965151977. The cubic root of 6493812728 is about 1865.6632349906.

The spelling of 6493812728 in words is "six billion, four hundred ninety-three million, eight hundred twelve thousand, seven hundred twenty-eight".