28342052123 has 24 divisors (see below), whose sum is σ = 36153025200. Its totient is φ = 21970206720.

The previous prime is 28342052099. The next prime is 28342052161. The reversal of 28342052123 is 32125024382.

It is not a de Polignac number, because 28342052123 - 2²⁰ = 28341003547 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28342052123.

It is not an unprimeable number, because it can be changed into a prime (28342022123) 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 23 ways as a sum of consecutive naturals, for example, 32198 + ... + 240251.

It is an arithmetic number, because the mean of its divisors is an integer number (1506376050).

Almost surely, 2^28342052123 is an apocalyptic number.

28342052123 is a deficient number, since it is larger than the sum of its proper divisors (7810973077).

28342052123 is a wasteful number, since it uses less digits than its factorization.

28342052123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272667 (or 272660 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The spelling of 28342052123 in words is "twenty-eight billion, three hundred forty-two million, fifty-two thousand, one hundred twenty-three".