279228 has 12 divisors (see below), whose sum is σ = 651560. Its totient is φ = 93072.

The previous prime is 279221. The next prime is 279269. The reversal of 279228 is 822972.

It is a tau number, because it is divible by the number of its divisors (12).

It is a d-powerful number, because it can be written as 2² + 7⁵ + 2⁸ + 9 + 2¹⁸ + 8 .

It is a junction number, because it is equal to n+sod(n) for n = 279195 and 279204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (279221) by changing a digit.

279228 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11623 + ... + 11646.

2²⁷⁹²²⁸ is an apocalyptic number.

It is an amenable number.

279228 is an abundant number, since it is smaller than the sum of its proper divisors (372332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

279228 is a wasteful number, since it uses less digits than its factorization.

279228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23276 (or 23274 counting only the distinct ones).

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

The square root of 279228 is about 528.4202872714. The cubic root of 279228 is about 65.3611455469.

The spelling of 279228 in words is "two hundred seventy-nine thousand, two hundred twenty-eight".