169942228 has 6 divisors (see below), whose sum is σ = 297398906. Its totient is φ = 84971112.

The previous prime is 169942211. The next prime is 169942229. The reversal of 169942228 is 822249961.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 169728784 + 213444 = 13028^2 + 462^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169942229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21242775 + ... + 21242782.

Almost surely, 2^169942228 is an apocalyptic number.

It is an amenable number.

169942228 is a deficient number, since it is larger than the sum of its proper divisors (127456678).

169942228 is a wasteful number, since it uses less digits than its factorization.

169942228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42485561 (or 42485559 counting only the distinct ones).

The product of its digits is 124416, while the sum is 43.

The square root of 169942228 is about 13036.1891670841. The cubic root of 169942228 is about 553.9030661858.

The spelling of 169942228 in words is "one hundred sixty-nine million, nine hundred forty-two thousand, two hundred twenty-eight".