228221082 has 24 divisors (see below), whose sum is σ = 494757120. Its totient is φ = 76030920.

The previous prime is 228221053. The next prime is 228221087. The reversal of 228221082 is 280122822.

228221082 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (228221087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59169 + ... + 62907.

It is an arithmetic number, because the mean of its divisors is an integer number (20614880).

Almost surely, 2^228221082 is an apocalyptic number.

228221082 is an abundant number, since it is smaller than the sum of its proper divisors (266536038).

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

228221082 is a wasteful number, since it uses less digits than its factorization.

228221082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7138 (or 7135 counting only the distinct ones).

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

The square root of 228221082 is about 15106.9878533082. The cubic root of 228221082 is about 611.1088690190.

The spelling of 228221082 in words is "two hundred twenty-eight million, two hundred twenty-one thousand, eighty-two".