228844213 has 4 divisors (see below), whose sum is σ = 246447628. Its totient is φ = 211240800.

The previous prime is 228844211. The next prime is 228844219. The reversal of 228844213 is 312448822.

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 18507204 + 210337009 = 4302^2 + 14503^2 .

It is a cyclic number.

It is not a de Polignac number, because 228844213 - 2¹ = 228844211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228844211) 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, 8801688 + ... + 8801713.

It is an arithmetic number, because the mean of its divisors is an integer number (61611907).

Almost surely, 2^228844213 is an apocalyptic number.

It is an amenable number.

228844213 is a deficient number, since it is larger than the sum of its proper divisors (17603415).

228844213 is a wasteful number, since it uses less digits than its factorization.

228844213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17603414.

The product of its digits is 24576, while the sum is 34.

The square root of 228844213 is about 15127.5977273327. The cubic root of 228844213 is about 611.6645507066.

The spelling of 228844213 in words is "two hundred twenty-eight million, eight hundred forty-four thousand, two hundred thirteen".