6344140 has 24 divisors (see below), whose sum is σ = 14534352. Its totient is φ = 2306880.

The previous prime is 6344087. The next prime is 6344147. The reversal of 6344140 is 414436.

It is a happy number.

It is a super-2 number, since 2×6344140² = 80496224679200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (6344147) by changing a digit.

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, 14199 + ... + 14638.

It is an arithmetic number, because the mean of its divisors is an integer number (605598).

Almost surely, 2^6344140 is an apocalyptic number.

It is an amenable number.

6344140 is an abundant number, since it is smaller than the sum of its proper divisors (8190212).

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

6344140 is a wasteful number, since it uses less digits than its factorization.

6344140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28857 (or 28855 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 6344140 is about 2518.7576302614. The cubic root of 6344140 is about 185.1218092368.

Adding to 6344140 its reverse (414436), we get a palindrome (6758576).

It can be divided in two parts, 634 and 4140, that added together give a palindrome (4774).

The spelling of 6344140 in words is "six million, three hundred forty-four thousand, one hundred forty".