28442065672 has 16 divisors (see below), whose sum is σ = 53479951740. Its totient is φ = 14180745216.

The previous prime is 28442065669. The next prime is 28442065693. The reversal of 28442065672 is 27656024482.

It can be written as a sum of positive squares in 2 ways, for example, as 28437425956 + 4639716 = 168634^2 + 2154^2 .

It is a super-3 number, since 3×28442065672³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5032953 + ... + 5038600.

Almost surely, 2^28442065672 is an apocalyptic number.

It is an amenable number.

28442065672 is a deficient number, since it is larger than the sum of its proper divisors (25037886068).

28442065672 is a wasteful number, since it uses less digits than its factorization.

28442065672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10071912 (or 10071908 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 46.

The spelling of 28442065672 in words is "twenty-eight billion, four hundred forty-two million, sixty-five thousand, six hundred seventy-two".