228718841 has 4 divisors (see below), whose sum is σ = 246312612. Its totient is φ = 211125072.

The previous prime is 228718817. The next prime is 228718879. The reversal of 228718841 is 148817822.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 148817822 = 2 ⋅74408911.

It can be written as a sum of positive squares in 2 ways, for example, as 108597241 + 120121600 = 10421^2 + 10960^2 .

It is a cyclic number.

It is not a de Polignac number, because 228718841 - 2²⁶ = 161609977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228718811) 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 3 ways as a sum of consecutive naturals, for example, 8796866 + ... + 8796891.

It is an arithmetic number, because the mean of its divisors is an integer number (61578153).

Almost surely, 2^228718841 is an apocalyptic number.

It is an amenable number.

228718841 is a deficient number, since it is larger than the sum of its proper divisors (17593771).

228718841 is a wasteful number, since it uses less digits than its factorization.

228718841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17593770.

The product of its digits is 57344, while the sum is 41.

The square root of 228718841 is about 15123.4533424083. The cubic root of 228718841 is about 611.5528304300.

The spelling of 228718841 in words is "two hundred twenty-eight million, seven hundred eighteen thousand, eight hundred forty-one".