228081366 has 32 divisors (see below), whose sum is σ = 516417120. Its totient is φ = 74591712.

The previous prime is 228081361. The next prime is 228081383. The reversal of 228081366 is 663180822.

It is a super-2 number, since 2×228081366² = 104042219032851912, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 228081366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228081361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36985 + ... + 42708.

It is an arithmetic number, because the mean of its divisors is an integer number (16138035).

Almost surely, 2^228081366 is an apocalyptic number.

228081366 is an abundant number, since it is smaller than the sum of its proper divisors (288335754).

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

228081366 is a wasteful number, since it uses less digits than its factorization.

228081366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79757 (or 79751 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 228081366 is about 15102.3629277011. The cubic root of 228081366 is about 610.9841374570.

The spelling of 228081366 in words is "two hundred twenty-eight million, eighty-one thousand, three hundred sixty-six".