28375915892 has 6 divisors (see below), whose sum is σ = 49657852818. Its totient is φ = 14187957944.

The previous prime is 28375915847. The next prime is 28375915907. The reversal of 28375915892 is 29851957382.

It can be written as a sum of positive squares in only one way, i.e., 28360580836 + 15335056 = 168406^2 + 3916^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 3546989483 + ... + 3546989490.

It is an arithmetic number, because the mean of its divisors is an integer number (8276308803).

Almost surely, 2^28375915892 is an apocalyptic number.

It is an amenable number.

28375915892 is a deficient number, since it is larger than the sum of its proper divisors (21281936926).

28375915892 is a wasteful number, since it uses less digits than its factorization.

28375915892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7093978977 (or 7093978975 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 59.

The spelling of 28375915892 in words is "twenty-eight billion, three hundred seventy-five million, nine hundred fifteen thousand, eight hundred ninety-two".