228261089 has 8 divisors (see below), whose sum is σ = 265792320. Its totient is φ = 191960496.

The previous prime is 228261083. The next prime is 228261101. The reversal of 228261089 is 980162822.

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

It is not a de Polignac number, because 228261089 - 2¹² = 228256993 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (228261083) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 307259 + ... + 308000.

It is an arithmetic number, because the mean of its divisors is an integer number (33224040).

Almost surely, 2^228261089 is an apocalyptic number.

It is an amenable number.

228261089 is a deficient number, since it is larger than the sum of its proper divisors (37531231).

228261089 is an equidigital number, since it uses as much as digits as its factorization.

228261089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615319.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 228261089 is about 15108.3119176167. The cubic root of 228261089 is about 611.1445759219.

The spelling of 228261089 in words is "two hundred twenty-eight million, two hundred sixty-one thousand, eighty-nine".