28052819187 has 8 divisors (see below), whose sum is σ = 37457119440. Its totient is φ = 18675199200.

The previous prime is 28052819167. The next prime is 28052819191. The reversal of 28052819187 is 78191825082.

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

It is not a de Polignac number, because 28052819187 - 2²² = 28048624883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28052819167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6667612 + ... + 6671817.

It is an arithmetic number, because the mean of its divisors is an integer number (4682139930).

Almost surely, 2^28052819187 is an apocalyptic number.

28052819187 is a deficient number, since it is larger than the sum of its proper divisors (9404300253).

28052819187 is a wasteful number, since it uses less digits than its factorization.

28052819187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13340133.

The product of its (nonzero) digits is 645120, while the sum is 51.

The spelling of 28052819187 in words is "twenty-eight billion, fifty-two million, eight hundred nineteen thousand, one hundred eighty-seven".