228664206 has 48 divisors (see below), whose sum is σ = 519367680. Its totient is φ = 72570960.

The previous prime is 228664193. The next prime is 228664213. The reversal of 228664206 is 602466822.

228664206 is a `hidden beast` number, since 2 + 2 + 8 + 6 + 642 + 0 + 6 = 666.

It is a super-2 number, since 2×228664206² = 104574638211220872, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 97791 + ... + 100101.

It is an arithmetic number, because the mean of its divisors is an integer number (10820160).

Almost surely, 2^228664206 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228664206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259683840).

228664206 is an abundant number, since it is smaller than the sum of its proper divisors (290703474).

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

228664206 is a wasteful number, since it uses less digits than its factorization.

228664206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2581 (or 2578 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 228664206 is about 15121.6469341140. The cubic root of 228664206 is about 611.5041318480.

It can be divided in two parts, 22866 and 4206, that added together give a palindrome (27072).

The spelling of 228664206 in words is "two hundred twenty-eight million, six hundred sixty-four thousand, two hundred six".