228278 has 8 divisors (see below), whose sum is σ = 345072. Its totient is φ = 113256.

The previous prime is 228257. The next prime is 228281. The reversal of 228278 is 872822.

228278 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×228278² = 104221690568, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 228278.

It is a congruent number.

It is an unprimeable number.

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, 50 + ... + 677.

It is an arithmetic number, because the mean of its divisors is an integer number (43134).

2²²⁸²⁷⁸ is an apocalyptic number.

228278 is a deficient number, since it is larger than the sum of its proper divisors (116794).

228278 is a wasteful number, since it uses less digits than its factorization.

228278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886.

The product of its digits is 3584, while the sum is 29.

The square root of 228278 is about 477.7844702374. The cubic root of 228278 is about 61.1159668012.

The spelling of 228278 in words is "two hundred twenty-eight thousand, two hundred seventy-eight".