228449 has 4 divisors (see below), whose sum is σ = 246036. Its totient is φ = 210864.

The previous prime is 228443. The next prime is 228451. The reversal of 228449 is 944822.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 944822 = 2 ⋅472411.

It can be written as a sum of positive squares in 2 ways, for example, as 93025 + 135424 = 305^2 + 368^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (228443) 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, 8774 + ... + 8799.

It is an arithmetic number, because the mean of its divisors is an integer number (61509).

2²²⁸⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

228449 is a deficient number, since it is larger than the sum of its proper divisors (17587).

228449 is a wasteful number, since it uses less digits than its factorization.

228449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17586.

The product of its digits is 4608, while the sum is 29.

The square root of 228449 is about 477.9633877192. The cubic root of 228449 is about 61.1312233771.

The spelling of 228449 in words is "two hundred twenty-eight thousand, four hundred forty-nine".