438820228 has 96 divisors (see below), whose sum is σ = 1005500160. Its totient is φ = 162570240.

The previous prime is 438820189. The next prime is 438820237. The reversal of 438820228 is 822028834.

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, 651700 + ... + 652372.

It is an arithmetic number, because the mean of its divisors is an integer number (10473960).

Almost surely, 2^438820228 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 438820228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (502750080).

438820228 is an abundant number, since it is smaller than the sum of its proper divisors (566679932).

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

438820228 is a wasteful number, since it uses less digits than its factorization.

438820228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797 (or 795 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 37.

The square root of 438820228 is about 20948.0363757561. The cubic root of 438820228 is about 759.9100932427.

The spelling of 438820228 in words is "four hundred thirty-eight million, eight hundred twenty thousand, two hundred twenty-eight".