6144240 has 40 divisors (see below), whose sum is σ = 19047888. Its totient is φ = 1638400.

The previous prime is 6144223. The next prime is 6144247. The reversal of 6144240 is 424416.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6144247) 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, 12561 + ... + 13040.

Almost surely, 2^6144240 is an apocalyptic number.

6144240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6144240 is an abundant number, since it is smaller than the sum of its proper divisors (12903648).

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

6144240 is a wasteful number, since it uses less digits than its factorization.

6144240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25617 (or 25611 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 6144240 is about 2478.7577533918. The cubic root of 6144240 is about 183.1566635988.

Adding to 6144240 its reverse (424416), we get a palindrome (6568656).

The spelling of 6144240 in words is "six million, one hundred forty-four thousand, two hundred forty".