228143322 has 108 divisors (see below), whose sum is σ = 566576010. Its totient is φ = 66290400.

The previous prime is 228143297. The next prime is 228143327. The reversal of 228143322 is 223341822.

228143322 is a `hidden beast` number, since 228 + 1 + 433 + 2 + 2 = 666.

228143322 is digitally balanced in base 2, 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 only one way, i.e., 176863401 + 51279921 = 13299^2 + 7161^2 .

It is not an unprimeable number, because it can be changed into a prime (228143327) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 2093004 + ... + 2093112.

Almost surely, 2^228143322 is an apocalyptic number.

228143322 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 228143322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283288005).

228143322 is an abundant number, since it is smaller than the sum of its proper divisors (338432688).

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

228143322 is a wasteful number, since it uses less digits than its factorization.

228143322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201 (or 156 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 228143322 is about 15104.4139906188. The cubic root of 228143322 is about 611.0394550057.

The spelling of 228143322 in words is "two hundred twenty-eight million, one hundred forty-three thousand, three hundred twenty-two".