4238220 has 48 divisors (see below), whose sum is σ = 13563648. Its totient is φ = 968640.

The previous prime is 4238189. The next prime is 4238231. The reversal of 4238220 is 228324.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4626 + ... + 5465.

It is an arithmetic number, because the mean of its divisors is an integer number (282576).

Almost surely, 2^4238220 is an apocalyptic number.

It is an amenable number.

4238220 is an abundant number, since it is smaller than the sum of its proper divisors (9325428).

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

4238220 is a wasteful number, since it uses less digits than its factorization.

4238220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10110 (or 10108 counting only the distinct ones).

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

The square root of 4238220 is about 2058.6937606162. The cubic root of 4238220 is about 161.8307942180.

The spelling of 4238220 in words is "four million, two hundred thirty-eight thousand, two hundred twenty".