228897 has 12 divisors (see below), whose sum is σ = 342420. Its totient is φ = 147168.

The previous prime is 228887. The next prime is 228901. The reversal of 228897 is 798822.

It can be written as a sum of positive squares in 2 ways, for example, as 159201 + 69696 = 399^2 + 264^2 .

It is not a de Polignac number, because 228897 - 2⁴ = 228881 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (228847) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 178 + ... + 699.

It is an arithmetic number, because the mean of its divisors is an integer number (28535).

2²²⁸⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

228897 is a deficient number, since it is larger than the sum of its proper divisors (113523).

228897 is a wasteful number, since it uses less digits than its factorization.

228897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912 (or 909 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 228897 is about 478.4318133235. The cubic root of 228897 is about 61.1711577538.

Adding to 228897 its product of digits (16128), we get a square (245025 = 495²).

The spelling of 228897 in words is "two hundred twenty-eight thousand, eight hundred ninety-seven".