28281108429 has 48 divisors (see below), whose sum is σ = 49211136000. Its totient is φ = 15288987168.

The previous prime is 28281108377. The next prime is 28281108433. The reversal of 28281108429 is 92480118282.

It is not a de Polignac number, because 28281108429 - 2⁸ = 28281108173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28281108929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 873472 + ... + 905270.

It is an arithmetic number, because the mean of its divisors is an integer number (1025232000).

Almost surely, 2^28281108429 is an apocalyptic number.

It is an amenable number.

28281108429 is a deficient number, since it is larger than the sum of its proper divisors (20930027571).

28281108429 is a wasteful number, since it uses less digits than its factorization.

28281108429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32574 (or 32571 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 45.

The spelling of 28281108429 in words is "twenty-eight billion, two hundred eighty-one million, one hundred eight thousand, four hundred twenty-nine".