228081566 has 8 divisors (see below), whose sum is σ = 342612504. Its totient is φ = 113877400.

The previous prime is 228081559. The next prime is 228081583. The reversal of 228081566 is 665180822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×228081566³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79940 + ... + 82743.

It is an arithmetic number, because the mean of its divisors is an integer number (42826563).

Almost surely, 2^228081566 is an apocalyptic number.

228081566 is a deficient number, since it is larger than the sum of its proper divisors (114530938).

228081566 is a wasteful number, since it uses less digits than its factorization.

228081566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163386.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 228081566 is about 15102.3695491800. The cubic root of 228081566 is about 610.9843160436.

The spelling of 228081566 in words is "two hundred twenty-eight million, eighty-one thousand, five hundred sixty-six".