6448427528 has 8 divisors (see below), whose sum is σ = 12090801630. Its totient is φ = 3224213760.

The previous prime is 6448427509. The next prime is 6448427551. The reversal of 6448427528 is 8257248446.

It can be written as a sum of positive squares in only one way, i.e., 6406721764 + 41705764 = 80042^2 + 6458^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403026713 + ... + 403026728.

Almost surely, 2^6448427528 is an apocalyptic number.

It is an amenable number.

6448427528 is a deficient number, since it is larger than the sum of its proper divisors (5642374102).

6448427528 is a wasteful number, since it uses less digits than its factorization.

6448427528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806053447 (or 806053443 counting only the distinct ones).

The product of its digits is 3440640, while the sum is 50.

The square root of 6448427528 is about 80302.1016412398. The cubic root of 6448427528 is about 1861.3067019392.

The spelling of 6448427528 in words is "six billion, four hundred forty-eight million, four hundred twenty-seven thousand, five hundred twenty-eight".