228146 has 4 divisors (see below), whose sum is σ = 342222. Its totient is φ = 114072.

The previous prime is 228139. The next prime is 228181. The reversal of 228146 is 641822.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 641822 = 2 ⋅320911.

It can be written as a sum of positive squares in only one way, i.e., 212521 + 15625 = 461^2 + 125^2 .

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 228146.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57035 + ... + 57038.

2²²⁸¹⁴⁶ is an apocalyptic number.

228146 is a deficient number, since it is larger than the sum of its proper divisors (114076).

228146 is a wasteful number, since it uses less digits than its factorization.

228146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114075.

The product of its digits is 768, while the sum is 23.

The square root of 228146 is about 477.6463126624. The cubic root of 228146 is about 61.1041845838.

Adding to 228146 its reverse (641822), we get a palindrome (869968).

The spelling of 228146 in words is "two hundred twenty-eight thousand, one hundred forty-six".