228938229 has 12 divisors (see below), whose sum is σ = 356126316. Its totient is φ = 140884992.

The previous prime is 228938183. The next prime is 228938233. The reversal of 228938229 is 922839822.

It can be written as a sum of positive squares in 2 ways, for example, as 144720900 + 84217329 = 12030^2 + 9177^2 .

It is not a de Polignac number, because 228938229 - 2²¹ = 226841077 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228938299) 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, 978252 + ... + 978485.

It is an arithmetic number, because the mean of its divisors is an integer number (29677193).

Almost surely, 2^228938229 is an apocalyptic number.

It is an amenable number.

228938229 is a deficient number, since it is larger than the sum of its proper divisors (127188087).

228938229 is a wasteful number, since it uses less digits than its factorization.

228938229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1956756 (or 1956753 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 228938229 is about 15130.7048414805. The cubic root of 228938229 is about 611.7483025603.

The spelling of 228938229 in words is "two hundred twenty-eight million, nine hundred thirty-eight thousand, two hundred twenty-nine".