169856228 has 12 divisors (see below), whose sum is σ = 297341100. Its totient is φ = 84901632.

The previous prime is 169856227. The next prime is 169856237. The reversal of 169856228 is 822658961.

It can be written as a sum of positive squares in 2 ways, for example, as 99161764 + 70694464 = 9958^2 + 8408^2 .

It is a super-2 number, since 2×169856228² = 57702276380775968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (169856227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17900 + ... + 25692.

It is an arithmetic number, because the mean of its divisors is an integer number (24778425).

Almost surely, 2^169856228 is an apocalyptic number.

It is an amenable number.

169856228 is a deficient number, since it is larger than the sum of its proper divisors (127484872).

169856228 is a wasteful number, since it uses less digits than its factorization.

169856228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13246 (or 13244 counting only the distinct ones).

The product of its digits is 414720, while the sum is 47.

The square root of 169856228 is about 13032.8902396974. The cubic root of 169856228 is about 553.8096154057.

The spelling of 169856228 in words is "one hundred sixty-nine million, eight hundred fifty-six thousand, two hundred twenty-eight".