6143220 has 36 divisors (see below), whose sum is σ = 18634980. Its totient is φ = 1638144.

The previous prime is 6143219. The next prime is 6143227. The reversal of 6143220 is 223416.

It is a happy number.

6143220 is a `hidden beast` number, since 614 + 32 + 20 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1425636 + 4717584 = 1194^2 + 2172^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 6143193 and 6143202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6143227) 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, 16885 + ... + 17244.

Almost surely, 2^6143220 is an apocalyptic number.

6143220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6143220 is an abundant number, since it is smaller than the sum of its proper divisors (12491760).

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

6143220 is a wasteful number, since it uses less digits than its factorization.

6143220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34144 (or 34139 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 6143220 is about 2478.5519966303. The cubic root of 6143220 is about 183.1465278112.

Adding to 6143220 its reverse (223416), we get a palindrome (6366636).

The spelling of 6143220 in words is "six million, one hundred forty-three thousand, two hundred twenty".