4220144 has 10 divisors (see below), whose sum is σ = 8176560. Its totient is φ = 2110064.

The previous prime is 4220143. The next prime is 4220173. The reversal of 4220144 is 4410224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4220141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131864 + ... + 131895.

It is an arithmetic number, because the mean of its divisors is an integer number (817656).

Almost surely, 2^4220144 is an apocalyptic number.

It is an amenable number.

4220144 is a deficient number, since it is larger than the sum of its proper divisors (3956416).

4220144 is a wasteful number, since it uses less digits than its factorization.

4220144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263767 (or 263761 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 4220144 is about 2054.2989071700. The cubic root of 4220144 is about 161.6003970189.

Adding to 4220144 its reverse (4410224), we get a palindrome (8630368).

The spelling of 4220144 in words is "four million, two hundred twenty thousand, one hundred forty-four".