6428256576 has 112 divisors (see below), whose sum is σ = 19728216576. Its totient is φ = 1809206784.

The previous prime is 6428256533. The next prime is 6428256607. The reversal of 6428256576 is 6756528246.

It is a tau number, because it is divible by the number of its divisors (112).

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54355 + ... + 125741.

Almost surely, 2^6428256576 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6428256576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9864108288).

6428256576 is an abundant number, since it is smaller than the sum of its proper divisors (13299960000).

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

6428256576 is a wasteful number, since it uses less digits than its factorization.

6428256576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71476 (or 71466 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 51.

The square root of 6428256576 is about 80176.4090989363. The cubic root of 6428256576 is about 1859.3639263351.

The spelling of 6428256576 in words is "six billion, four hundred twenty-eight million, two hundred fifty-six thousand, five hundred seventy-six".