28644103142 has 8 divisors (see below), whose sum is σ = 44014109832. Its totient is φ = 13972733200.

The previous prime is 28644103129. The next prime is 28644103153. The reversal of 28644103142 is 24130144682.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174659084 + ... + 174659247.

It is an arithmetic number, because the mean of its divisors is an integer number (5501763729).

Almost surely, 2^28644103142 is an apocalyptic number.

28644103142 is a deficient number, since it is larger than the sum of its proper divisors (15370006690).

28644103142 is a wasteful number, since it uses less digits than its factorization.

28644103142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349318374.

The product of its (nonzero) digits is 36864, while the sum is 35.

The spelling of 28644103142 in words is "twenty-eight billion, six hundred forty-four million, one hundred three thousand, one hundred forty-two".