228861169 has 8 divisors (see below), whose sum is σ = 236629800. Its totient is φ = 221175936.

The previous prime is 228861167. The next prime is 228861211. The reversal of 228861169 is 961168822.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 59861169 + 169000000 = 7737^2 + 13000^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 228861169 - 2¹ = 228861167 is a prime.

It is a super-2 number, since 2×228861169² = 104754869352093122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (228861163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15244 + ... + 26269.

It is an arithmetic number, because the mean of its divisors is an integer number (29578725).

Almost surely, 2^228861169 is an apocalyptic number.

It is an amenable number.

228861169 is a deficient number, since it is larger than the sum of its proper divisors (7768631).

228861169 is a wasteful number, since it uses less digits than its factorization.

228861169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41699.

The product of its digits is 82944, while the sum is 43.

The square root of 228861169 is about 15128.1581496228. The cubic root of 228861169 is about 611.6796572396.

The spelling of 228861169 in words is "two hundred twenty-eight million, eight hundred sixty-one thousand, one hundred sixty-nine".