28162103938 has 8 divisors (see below), whose sum is σ = 42368507532. Its totient is φ = 14039268096.

The previous prime is 28162103881. The next prime is 28162103939. The reversal of 28162103938 is 83930126182.

It can be written as a sum of positive squares in 2 ways, for example, as 26620206649 + 1541897289 = 163157^2 + 39267^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 28162103894 and 28162103903.

It is not an unprimeable number, because it can be changed into a prime (28162103939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20891095 + ... + 20892442.

Almost surely, 2^28162103938 is an apocalyptic number.

28162103938 is a deficient number, since it is larger than the sum of its proper divisors (14206403594).

28162103938 is a wasteful number, since it uses less digits than its factorization.

28162103938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41783876.

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

The spelling of 28162103938 in words is "twenty-eight billion, one hundred sixty-two million, one hundred three thousand, nine hundred thirty-eight".