6224240 has 60 divisors (see below), whose sum is σ = 15931272. Its totient is φ = 2259840.

The previous prime is 6224221. The next prime is 6224243. The reversal of 6224240 is 424226.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6224243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9359 + ... + 10001.

Almost surely, 2^6224240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6224240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7965636).

6224240 is an abundant number, since it is smaller than the sum of its proper divisors (9707032).

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

6224240 is a wasteful number, since it uses less digits than its factorization.

6224240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678 (or 661 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 6224240 is about 2494.8426804109. The cubic root of 6224240 is about 183.9481580477.

Adding to 6224240 its reverse (424226), we get a palindrome (6648466).

The spelling of 6224240 in words is "six million, two hundred twenty-four thousand, two hundred forty".