228441389 has 16 divisors (see below), whose sum is σ = 263407680. Its totient is φ = 195932160.

The previous prime is 228441379. The next prime is 228441419. The reversal of 228441389 is 983144822.

It is a cyclic number.

It is not a de Polignac number, because 228441389 - 2⁸ = 228441133 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228441319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51587 + ... + 55839.

It is an arithmetic number, because the mean of its divisors is an integer number (16462980).

Almost surely, 2^228441389 is an apocalyptic number.

It is an amenable number.

228441389 is a deficient number, since it is larger than the sum of its proper divisors (34966291).

228441389 is a wasteful number, since it uses less digits than its factorization.

228441389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4540.

The product of its digits is 110592, while the sum is 41.

The square root of 228441389 is about 15114.2776539271. The cubic root of 228441389 is about 611.3054448753.

The spelling of 228441389 in words is "two hundred twenty-eight million, four hundred forty-one thousand, three hundred eighty-nine".