28174844168 has 8 divisors (see below), whose sum is σ = 52827832830. Its totient is φ = 14087422080.

The previous prime is 28174844123. The next prime is 28174844177. The reversal of 28174844168 is 86144847182.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 24693608164 + 3481236004 = 157142^2 + 59002^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×28174844168² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1760927753 + ... + 1760927768.

Almost surely, 2^28174844168 is an apocalyptic number.

It is an amenable number.

28174844168 is a deficient number, since it is larger than the sum of its proper divisors (24652988662).

28174844168 is a wasteful number, since it uses less digits than its factorization.

28174844168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3521855527 (or 3521855523 counting only the distinct ones).

The product of its digits is 2752512, while the sum is 53.

The spelling of 28174844168 in words is "twenty-eight billion, one hundred seventy-four million, eight hundred forty-four thousand, one hundred sixty-eight".