28108234544 has 40 divisors (see below), whose sum is σ = 59755519152. Its totient is φ = 12728252160.

The previous prime is 28108234477. The next prime is 28108234547. The reversal of 28108234544 is 44543280182.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28108234547) 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 7 ways as a sum of consecutive naturals, for example, 1263842 + ... + 1285889.

Almost surely, 2^28108234544 is an apocalyptic number.

It is an amenable number.

28108234544 is an abundant number, since it is smaller than the sum of its proper divisors (31647284608).

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

28108234544 is a wasteful number, since it uses less digits than its factorization.

28108234544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2549805 (or 2549799 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 41.

The spelling of 28108234544 in words is "twenty-eight billion, one hundred eight million, two hundred thirty-four thousand, five hundred forty-four".