6438528004 has 24 divisors (see below), whose sum is σ = 11303949440. Its totient is φ = 3208845024.

The previous prime is 6438527999. The next prime is 6438528037. The reversal of 6438528004 is 4008258346.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3089947 + ... + 3092029.

Almost surely, 2^6438528004 is an apocalyptic number.

It is an amenable number.

6438528004 is a deficient number, since it is larger than the sum of its proper divisors (4865421436).

6438528004 is a wasteful number, since it uses less digits than its factorization.

6438528004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4219 (or 4217 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 40.

The square root of 6438528004 is about 80240.4387076741. The cubic root of 6438528004 is about 1860.3537312362.

The spelling of 6438528004 in words is "six billion, four hundred thirty-eight million, five hundred twenty-eight thousand, four".