228234889 has 4 divisors (see below), whose sum is σ = 230587924. Its totient is φ = 225881856.

The previous prime is 228234887. The next prime is 228234931. The reversal of 228234889 is 988432822.

It is a happy number.

228234889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 146603664 + 81631225 = 12108^2 + 9035^2 .

It is a cyclic number.

It is not a de Polignac number, because 228234889 - 2¹ = 228234887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228234883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1176372 + ... + 1176565.

It is an arithmetic number, because the mean of its divisors is an integer number (57646981).

Almost surely, 2^228234889 is an apocalyptic number.

It is an amenable number.

228234889 is a deficient number, since it is larger than the sum of its proper divisors (2353035).

228234889 is an equidigital number, since it uses as much as digits as its factorization.

228234889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2353034.

The product of its digits is 442368, while the sum is 46.

The square root of 228234889 is about 15107.4448203526. Note that the first 3 decimals coincide. The cubic root of 228234889 is about 611.1211924642.

The spelling of 228234889 in words is "two hundred twenty-eight million, two hundred thirty-four thousand, eight hundred eighty-nine".