6442496928 has 72 divisors (see below), whose sum is σ = 20938121568. Its totient is φ = 1840712832.

The previous prime is 6442496881. The next prime is 6442496933. The reversal of 6442496928 is 8296942446.

6442496928 is a `hidden beast` number, since 64 + 4 + 2 + 496 + 92 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a nude number because it is divisible by every one of its digits.

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, 1595826 + ... + 1599857.

It is an arithmetic number, because the mean of its divisors is an integer number (290807244).

Almost surely, 2^6442496928 is an apocalyptic number.

It is an amenable number.

6442496928 is an abundant number, since it is smaller than the sum of its proper divisors (14495624640).

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

6442496928 is a wasteful number, since it uses less digits than its factorization.

6442496928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3195706 (or 3195695 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 54.

The square root of 6442496928 is about 80265.1663425673. The cubic root of 6442496928 is about 1860.7359141368.

The spelling of 6442496928 in words is "six billion, four hundred forty-two million, four hundred ninety-six thousand, nine hundred twenty-eight".