228297 has 4 divisors (see below), whose sum is σ = 304400. Its totient is φ = 152196.

The previous prime is 228281. The next prime is 228299. The reversal of 228297 is 792822.

228297 = 104² + 105² + ... + 121².

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 228297 - 2⁴ = 228281 is a prime.

It is a D-number.

It is a Duffinian number.

228297 is a lucky number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (228299) 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, 38047 + ... + 38052.

It is an arithmetic number, because the mean of its divisors is an integer number (76100).

2²²⁸²⁹⁷ is an apocalyptic number.

It is an amenable number.

228297 is a deficient number, since it is larger than the sum of its proper divisors (76103).

228297 is an equidigital number, since it uses as much as digits as its factorization.

228297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76102.

The product of its digits is 4032, while the sum is 30.

The square root of 228297 is about 477.8043532661. The cubic root of 228297 is about 61.1176623525.

It can be divided in two parts, 228 and 297, that added together give a palindrome (525).

The spelling of 228297 in words is "two hundred twenty-eight thousand, two hundred ninety-seven".