6428730884 has 12 divisors (see below), whose sum is σ = 11252076108. Its totient is φ = 3213852000.

The previous prime is 6428730881. The next prime is 6428730937. The reversal of 6428730884 is 4880378246.

It can be written as a sum of positive squares in 2 ways, for example, as 3687161284 + 2741569600 = 60722^2 + 52360^2 .

It is not an unprimeable number, because it can be changed into a prime (6428730881) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 99467 + ... + 150834.

It is an arithmetic number, because the mean of its divisors is an integer number (937673009).

Almost surely, 2^6428730884 is an apocalyptic number.

It is an amenable number.

6428730884 is a deficient number, since it is larger than the sum of its proper divisors (4823345224).

6428730884 is a wasteful number, since it uses less digits than its factorization.

6428730884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256726 (or 256724 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 50.

The square root of 6428730884 is about 80179.3669468648. The cubic root of 6428730884 is about 1859.4096561783.

The spelling of 6428730884 in words is "six billion, four hundred twenty-eight million, seven hundred thirty thousand, eight hundred eighty-four".