228041989 has 16 divisors (see below), whose sum is σ = 271454976. Its totient is φ = 187488000.

The previous prime is 228041977. The next prime is 228042019. The reversal of 228041989 is 989140822.

228041989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 228041989 - 2¹¹ = 228039941 is a prime.

It is a super-2 number, since 2×228041989² = 104006297494152242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228041929) 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, 12189 + ... + 24589.

It is an arithmetic number, because the mean of its divisors is an integer number (16965936).

Almost surely, 2^228041989 is an apocalyptic number.

It is an amenable number.

228041989 is a deficient number, since it is larger than the sum of its proper divisors (43412987).

228041989 is a wasteful number, since it uses less digits than its factorization.

228041989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12516.

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 228041989 is about 15101.0592012613. The cubic root of 228041989 is about 610.9489744105.

The spelling of 228041989 in words is "two hundred twenty-eight million, forty-one thousand, nine hundred eighty-nine".