28123545342 has 8 divisors (see below), whose sum is σ = 56247090696. Its totient is φ = 9374515112.

The previous prime is 28123545341. The next prime is 28123545391. The reversal of 28123545342 is 24354532182.

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

28123545342 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 28123545342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28123545341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2343628773 + ... + 2343628784.

It is an arithmetic number, because the mean of its divisors is an integer number (7030886337).

Almost surely, 2^28123545342 is an apocalyptic number.

28123545342 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28123545342 is a wasteful number, since it uses less digits than its factorization.

28123545342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4687257562.

The product of its digits is 230400, while the sum is 39.

The spelling of 28123545342 in words is "twenty-eight billion, one hundred twenty-three million, five hundred forty-five thousand, three hundred forty-two".