28271120754138 has 32 divisors (see below), whose sum is σ = 59532691387200. Its totient is φ = 8925540978816.

The previous prime is 28271120754113. The next prime is 28271120754139. The reversal of 28271120754138 is 83145702117282.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28271120754139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29828083 + ... + 30761286.

It is an arithmetic number, because the mean of its divisors is an integer number (1860396605850).

Almost surely, 2^{28271120754138} is an apocalyptic number.

28271120754138 is an abundant number, since it is smaller than the sum of its proper divisors (31261570633062).

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

28271120754138 is a wasteful number, since it uses less digits than its factorization.

28271120754138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60593486.

The product of its (nonzero) digits is 1505280, while the sum is 51.

The spelling of 28271120754138 in words is "twenty-eight trillion, two hundred seventy-one billion, one hundred twenty million, seven hundred fifty-four thousand, one hundred thirty-eight".