6221424 has 40 divisors (see below), whose sum is σ = 17534592. Its totient is φ = 1885120.

The previous prime is 6221377. The next prime is 6221429. The reversal of 6221424 is 4241226.

6221424 = T₂₁₉ + T₂₂₀ + ... + T₃₆₂.

It is a super-2 number, since 2×6221424² = 77412233175552, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 6221424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6221429) 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, 5364 + ... + 6419.

Almost surely, 2^6221424 is an apocalyptic number.

It is an amenable number.

6221424 is an abundant number, since it is smaller than the sum of its proper divisors (11313168).

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

6221424 is a wasteful number, since it uses less digits than its factorization.

6221424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11805 (or 11799 counting only the distinct ones).

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

The square root of 6221424 is about 2494.2782523207. The cubic root of 6221424 is about 183.9204129655.

The spelling of 6221424 in words is "six million, two hundred twenty-one thousand, four hundred twenty-four".