228361566 has 16 divisors (see below), whose sum is σ = 456876288. Its totient is φ = 76095000.

The previous prime is 228361559. The next prime is 228361591. The reversal of 228361566 is 665163822.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24501 + ... + 32511.

It is an arithmetic number, because the mean of its divisors is an integer number (28554768).

Almost surely, 2^228361566 is an apocalyptic number.

228361566 is an abundant number, since it is smaller than the sum of its proper divisors (228514722).

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

228361566 is a wasteful number, since it uses less digits than its factorization.

228361566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12767.

The product of its digits is 103680, while the sum is 39.

The square root of 228361566 is about 15111.6367743537. The cubic root of 228361566 is about 611.2342348969.

The spelling of 228361566 in words is "two hundred twenty-eight million, three hundred sixty-one thousand, five hundred sixty-six".