228556089 has 12 divisors (see below), whose sum is σ = 330284500. Its totient is φ = 152302464.

The previous prime is 228556039. The next prime is 228556091. The reversal of 228556089 is 980655822.

228556089 is a `hidden beast` number, since 2 + 2 + 8 + 5 + 560 + 89 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 26347689 + 202208400 = 5133^2 + 14220^2 .

It is not a de Polignac number, because 228556089 - 2¹² = 228551993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228556039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23277 + ... + 31605.

Almost surely, 2^228556089 is an apocalyptic number.

It is an amenable number.

228556089 is a deficient number, since it is larger than the sum of its proper divisors (101728411).

228556089 is a wasteful number, since it uses less digits than its factorization.

228556089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11384 (or 11381 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The square root of 228556089 is about 15118.0716032171. The cubic root of 228556089 is about 611.4077395353.

The spelling of 228556089 in words is "two hundred twenty-eight million, five hundred fifty-six thousand, eighty-nine".