228204117 has 24 divisors (see below), whose sum is σ = 347634560. Its totient is φ = 143856000.

The previous prime is 228204089. The next prime is 228204121. The reversal of 228204117 is 711402822.

228204117 is a `hidden beast` number, since 228 + 20 + 411 + 7 = 666.

It is not a de Polignac number, because 228204117 - 2¹⁴ = 228187733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228204187) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 127533 + ... + 129309.

Almost surely, 2^228204117 is an apocalyptic number.

It is an amenable number.

228204117 is a deficient number, since it is larger than the sum of its proper divisors (119430443).

228204117 is a wasteful number, since it uses less digits than its factorization.

228204117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2553 (or 2550 counting only the distinct ones).

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

The square root of 228204117 is about 15106.4263477502. The cubic root of 228204117 is about 611.0937262186.

Adding to 228204117 its reverse (711402822), we get a palindrome (939606939).

The spelling of 228204117 in words is "two hundred twenty-eight million, two hundred four thousand, one hundred seventeen".