4220238 has 24 divisors (see below), whose sum is σ = 9279144. Its totient is φ = 1278640.

The previous prime is 4220207. The next prime is 4220239. The reversal of 4220238 is 8320224.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4220239) 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, 2181 + ... + 3632.

It is an arithmetic number, because the mean of its divisors is an integer number (386631).

Almost surely, 2^4220238 is an apocalyptic number.

4220238 is an abundant number, since it is smaller than the sum of its proper divisors (5058906).

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

4220238 is a wasteful number, since it uses less digits than its factorization.

4220238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5840 (or 5829 counting only the distinct ones).

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

The square root of 4220238 is about 2054.3217858943. The cubic root of 4220238 is about 161.6015968456.

The spelling of 4220238 in words is "four million, two hundred twenty thousand, two hundred thirty-eight".