228220002 has 24 divisors (see below), whose sum is σ = 523564236. Its totient is φ = 71598336.

The previous prime is 228219989. The next prime is 228220009. The reversal of 228220002 is 200022822.

228220002 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 2 ways, for example, as 226532601 + 1687401 = 15051^2 + 1299^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (228220009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 372603 + ... + 373214.

Almost surely, 2^228220002 is an apocalyptic number.

228220002 is an abundant number, since it is smaller than the sum of its proper divisors (295344234).

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

228220002 is a wasteful number, since it uses less digits than its factorization.

228220002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745842 (or 745839 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 228220002 is about 15106.9521082183. The cubic root of 228220002 is about 611.1079050435.

Adding to 228220002 its reverse (200022822), we get a palindrome (428242824).

The spelling of 228220002 in words is "two hundred twenty-eight million, two hundred twenty thousand, two".