4220244 has 36 divisors (see below), whose sum is σ = 12192544. Its totient is φ = 1205712.

The previous prime is 4220243. The next prime is 4220269. The reversal of 4220244 is 4420224.

4220244 is a `hidden beast` number, since 422 + 0 + 244 = 666.

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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (4220243) 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, 8122 + ... + 8625.

Almost surely, 2^4220244 is an apocalyptic number.

It is an amenable number.

4220244 is an abundant number, since it is smaller than the sum of its proper divisors (7972300).

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

4220244 is a wasteful number, since it uses less digits than its factorization.

4220244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16764 (or 16759 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 4220244 is about 2054.3232462298. The cubic root of 4220244 is about 161.6016734297.

Adding to 4220244 its reverse (4420224), we get a palindrome (8640468).

The spelling of 4220244 in words is "four million, two hundred twenty thousand, two hundred forty-four".