203172228 has 108 divisors (see below), whose sum is σ = 602210700. Its totient is φ = 57585024.

The previous prime is 203172191. The next prime is 203172241. The reversal of 203172228 is 822271302.

It is a happy number.

203172228 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 17994564 + 185177664 = 4242^2 + 13608^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 262450 + ... + 263222.

It is an arithmetic number, because the mean of its divisors is an integer number (5576025).

Almost surely, 2^203172228 is an apocalyptic number.

203172228 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203172228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (301105350).

203172228 is an abundant number, since it is smaller than the sum of its proper divisors (399038472).

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

203172228 is a wasteful number, since it uses less digits than its factorization.

203172228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946 (or 934 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 203172228 is about 14253.8495852875. The cubic root of 203172228 is about 587.8792268960.

The spelling of 203172228 in words is "two hundred three million, one hundred seventy-two thousand, two hundred twenty-eight".