28109290248 has 64 divisors (see below), whose sum is σ = 84087628800. Its totient is φ = 8649011520.

The previous prime is 28109290247. The next prime is 28109290277. The reversal of 28109290248 is 84209290182.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28109290241) 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 15 ways as a sum of consecutive naturals, for example, 5002408 + ... + 5008023.

It is an arithmetic number, because the mean of its divisors is an integer number (1313869200).

Almost surely, 2^28109290248 is an apocalyptic number.

It is an amenable number.

28109290248 is an abundant number, since it is smaller than the sum of its proper divisors (55978338552).

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

28109290248 is a wasteful number, since it uses less digits than its factorization.

28109290248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10010459 (or 10010449 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 28109290248 in words is "twenty-eight billion, one hundred nine million, two hundred ninety thousand, two hundred forty-eight".