228708 has 18 divisors (see below), whose sum is σ = 578214. Its totient is φ = 76224.

The previous prime is 228707. The next prime is 228713. The reversal of 228708 is 807822.

228708 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 191844 + 36864 = 438^2 + 192^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (228707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3141 + ... + 3212.

It is an arithmetic number, because the mean of its divisors is an integer number (32123).

2²²⁸⁷⁰⁸ is an apocalyptic number.

It is an amenable number.

228708 is an abundant number, since it is smaller than the sum of its proper divisors (349506).

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

228708 is a wasteful number, since it uses less digits than its factorization.

228708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6363 (or 6358 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 228708 is about 478.2342522237. The cubic root of 228708 is about 61.1543167986.

The spelling of 228708 in words is "two hundred twenty-eight thousand, seven hundred eight".