228265 has 8 divisors (see below), whose sum is σ = 278208. Its totient is φ = 179760.

The previous prime is 228257. The next prime is 228281. The reversal of 228265 is 562822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 228265 - 2³ = 228257 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹³ + 2¹⁶ + 2¹⁷ + 8² + 6⁵ + 5⁶ .

It is a Duffinian number.

228265 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34 + ... + 676.

It is an arithmetic number, because the mean of its divisors is an integer number (34776).

2²²⁸²⁶⁵ is an apocalyptic number.

It is an amenable number.

228265 is a deficient number, since it is larger than the sum of its proper divisors (49943).

228265 is an equidigital number, since it uses as much as digits as its factorization.

228265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719.

The product of its digits is 1920, while the sum is 25.

The square root of 228265 is about 477.7708655831. The cubic root of 228265 is about 61.1148066330.

The spelling of 228265 in words is "two hundred twenty-eight thousand, two hundred sixty-five".