6538394 has 16 divisors (see below), whose sum is σ = 10774080. Its totient is φ = 2962080.

The previous prime is 6538373. The next prime is 6538403. The reversal of 6538394 is 4938356.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a d-powerful number, because it can be written as 6⁸ + 5³ + 3⁵ + 8 + 3¹⁴ + 9⁵ + 4⁷ .

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 in 7 ways as a sum of consecutive naturals, for example, 2867 + ... + 4614.

It is an arithmetic number, because the mean of its divisors is an integer number (673380).

Almost surely, 2^6538394 is an apocalyptic number.

6538394 is a deficient number, since it is larger than the sum of its proper divisors (4235686).

6538394 is a wasteful number, since it uses less digits than its factorization.

6538394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7525.

The product of its digits is 77760, while the sum is 38.

The square root of 6538394 is about 2557.0283533821. The cubic root of 6538394 is about 186.9922880898.

Subtracting from 6538394 its sum of digits (38), we obtain a palindrome (6538356).

The spelling of 6538394 in words is "six million, five hundred thirty-eight thousand, three hundred ninety-four".