6821431072 has 24 divisors (see below), whose sum is σ = 14136519600. Its totient is φ = 3231203904.

The previous prime is 6821431049. The next prime is 6821431081. The reversal of 6821431072 is 2701341286.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5609122 + ... + 5610337.

It is an arithmetic number, because the mean of its divisors is an integer number (589021650).

Almost surely, 2^6821431072 is an apocalyptic number.

It is an amenable number.

6821431072 is an abundant number, since it is smaller than the sum of its proper divisors (7315088528).

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

6821431072 is a wasteful number, since it uses less digits than its factorization.

6821431072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11219488 (or 11219480 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 6821431072 is about 82591.9552498910. The cubic root of 6821431072 is about 1896.5246786872.

The spelling of 6821431072 in words is "six billion, eight hundred twenty-one million, four hundred thirty-one thousand, seventy-two".