6438241028 has 12 divisors (see below), whose sum is σ = 11317447680. Its totient is φ = 3204684552.

The previous prime is 6438241009. The next prime is 6438241049. The reversal of 6438241028 is 8201428346.

It is a junction number, because it is equal to n+sod(n) for n = 6438240982 and 6438241000.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3607988 + ... + 3609771.

It is an arithmetic number, because the mean of its divisors is an integer number (943120640).

Almost surely, 2^6438241028 is an apocalyptic number.

It is an amenable number.

6438241028 is a deficient number, since it is larger than the sum of its proper divisors (4879206652).

6438241028 is a wasteful number, since it uses less digits than its factorization.

6438241028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7217986 (or 7217984 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 38.

The square root of 6438241028 is about 80238.6504622305. The cubic root of 6438241028 is about 1860.3260911294.

The spelling of 6438241028 in words is "six billion, four hundred thirty-eight million, two hundred forty-one thousand, twenty-eight".