228277 has 4 divisors (see below), whose sum is σ = 260896. Its totient is φ = 195660.

The previous prime is 228257. The next prime is 228281. The reversal of 228277 is 772822.

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, and also an emirpimes, since its reverse is a distinct semiprime: 772822 = 2 ⋅386411.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228277 is a prime.

It is a super-2 number, since 2×228277² = 104220777458, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228257) 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, 16299 + ... + 16312.

It is an arithmetic number, because the mean of its divisors is an integer number (65224).

2²²⁸²⁷⁷ is an apocalyptic number.

It is an amenable number.

228277 is a deficient number, since it is larger than the sum of its proper divisors (32619).

228277 is an equidigital number, since it uses as much as digits as its factorization.

228277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32618.

The product of its digits is 3136, while the sum is 28.

The square root of 228277 is about 477.7834237393. The cubic root of 228277 is about 61.1158775590.

It can be divided in two parts, 228 and 277, that added together give a palindrome (505).

The spelling of 228277 in words is "two hundred twenty-eight thousand, two hundred seventy-seven".