228071 has 4 divisors (see below), whose sum is σ = 229944. Its totient is φ = 226200.

The previous prime is 228061. The next prime is 228077. The reversal of 228071 is 170822.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 170822 = 2 ⋅85411.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228071 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 228071.

It is not an unprimeable number, because it can be changed into a prime (228077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 740 + ... + 1001.

It is an arithmetic number, because the mean of its divisors is an integer number (57486).

2²²⁸⁰⁷¹ is an apocalyptic number.

228071 is a deficient number, since it is larger than the sum of its proper divisors (1873).

228071 is a wasteful number, since it uses less digits than its factorization.

228071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1872.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 228071 is about 477.5677962342. The cubic root of 228071 is about 61.0974881173.

Adding to 228071 its reverse (170822), we get a palindrome (398893).

The spelling of 228071 in words is "two hundred twenty-eight thousand, seventy-one".