4223820 has 96 divisors (see below), whose sum is σ = 12954816. Its totient is φ = 1024000.

The previous prime is 4223801. The next prime is 4223831. The reversal of 4223820 is 283224.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41770 + ... + 41870.

It is an arithmetic number, because the mean of its divisors is an integer number (134946).

Almost surely, 2^4223820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4223820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6477408).

4223820 is an abundant number, since it is smaller than the sum of its proper divisors (8730996).

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

4223820 is a wasteful number, since it uses less digits than its factorization.

4223820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171 (or 169 counting only the distinct ones).

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

The square root of 4223820 is about 2055.1934215543. The cubic root of 4223820 is about 161.6473046332.

The spelling of 4223820 in words is "four million, two hundred twenty-three thousand, eight hundred twenty".