6448138 has 16 divisors (see below), whose sum is σ = 10068480. Its totient is φ = 3094416.

The previous prime is 6448133. The next prime is 6448157. The reversal of 6448138 is 8318446.

It is not an unprimeable number, because it can be changed into a prime (6448133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5295 + ... + 6397.

It is an arithmetic number, because the mean of its divisors is an integer number (629280).

Almost surely, 2^6448138 is an apocalyptic number.

6448138 is a deficient number, since it is larger than the sum of its proper divisors (3620342).

6448138 is a wasteful number, since it uses less digits than its factorization.

6448138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221.

The product of its digits is 18432, while the sum is 34.

The square root of 6448138 is about 2539.3184124879. The cubic root of 6448138 is about 186.1278844581.

The spelling of 6448138 in words is "six million, four hundred forty-eight thousand, one hundred thirty-eight".