6388842 has 16 divisors (see below), whose sum is σ = 12932640. Its totient is φ = 2103792.

The previous prime is 6388829. The next prime is 6388853. The reversal of 6388842 is 2488836.

It is a self number, because there is not a number n which added to its sum of digits gives 6388842.

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, 5917 + ... + 6912.

It is an arithmetic number, because the mean of its divisors is an integer number (808290).

Almost surely, 2^6388842 is an apocalyptic number.

6388842 is an abundant number, since it is smaller than the sum of its proper divisors (6543798).

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

6388842 is a wasteful number, since it uses less digits than its factorization.

6388842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12917.

The product of its digits is 73728, while the sum is 39.

The square root of 6388842 is about 2527.6158727148. The cubic root of 6388842 is about 185.5555929790. Note that the first 4 decimals are identical.

The spelling of 6388842 in words is "six million, three hundred eighty-eight thousand, eight hundred forty-two".