228144441 has 24 divisors (see below), whose sum is σ = 354950400. Its totient is φ = 129965472.

The previous prime is 228144409. The next prime is 228144443. The reversal of 228144441 is 144441822.

It is not a de Polignac number, because 228144441 - 2⁵ = 228144409 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 228144399 and 228144408.

It is not an unprimeable number, because it can be changed into a prime (228144443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49080 + ... + 53526.

It is an arithmetic number, because the mean of its divisors is an integer number (14789600).

Almost surely, 2^228144441 is an apocalyptic number.

228144441 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

228144441 is a deficient number, since it is larger than the sum of its proper divisors (126805959).

228144441 is a wasteful number, since it uses less digits than its factorization.

228144441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4813 (or 4806 counting only the distinct ones).

The product of its digits is 8192, while the sum is 30.

The square root of 228144441 is about 15104.4510327254. The cubic root of 228144441 is about 611.0404540152.

The spelling of 228144441 in words is "two hundred twenty-eight million, one hundred forty-four thousand, four hundred forty-one".