228028122 has 80 divisors (see below), whose sum is σ = 587328192. Its totient is φ = 64774080.

The previous prime is 228028121. The next prime is 228028147. The reversal of 228028122 is 221820822.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (228028121) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 238798 + ... + 239750.

Almost surely, 2^228028122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228028122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293664096).

228028122 is an abundant number, since it is smaller than the sum of its proper divisors (359300070).

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

228028122 is a wasteful number, since it uses less digits than its factorization.

228028122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185 (or 1176 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 228028122 is about 15100.6000543025. The cubic root of 228028122 is about 610.9365904322.

Adding to 228028122 its reverse (221820822), we get a palindrome (449848944).

It can be divided in two parts, 228028 and 122, that added together give a triangular number (228150 = T₆₇₅).

The spelling of 228028122 in words is "two hundred twenty-eight million, twenty-eight thousand, one hundred twenty-two".