28814378388 has 24 divisors (see below), whose sum is σ = 67288828992. Its totient is φ = 9596895744.

The previous prime is 28814378377. The next prime is 28814378413. The reversal of 28814378388 is 88387341882.

It is a congruent number.

It is an unprimeable number.

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, 971920 + ... + 1001127.

It is an arithmetic number, because the mean of its divisors is an integer number (2803701208).

Almost surely, 2^28814378388 is an apocalyptic number.

It is an amenable number.

28814378388 is an abundant number, since it is smaller than the sum of its proper divisors (38474450604).

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

28814378388 is a wasteful number, since it uses less digits than its factorization.

28814378388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1974271 (or 1974269 counting only the distinct ones).

The product of its digits is 16515072, while the sum is 60.

The spelling of 28814378388 in words is "twenty-eight billion, eight hundred fourteen million, three hundred seventy-eight thousand, three hundred eighty-eight".