28341778884 has 24 divisors (see below), whose sum is σ = 67537857408. Its totient is φ = 9246253920.

The previous prime is 28341778873. The next prime is 28341778903. The reversal of 28341778884 is 48887714382.

It is a super-3 number, since 3×28341778884³ (a number of 32 digits) contains 333 as substring.

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, 25125127 + ... + 25126254.

It is an arithmetic number, because the mean of its divisors is an integer number (2814077392).

Almost surely, 2^28341778884 is an apocalyptic number.

It is an amenable number.

28341778884 is an abundant number, since it is smaller than the sum of its proper divisors (39196078524).

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

28341778884 is a wasteful number, since it uses less digits than its factorization.

28341778884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50251435 (or 50251433 counting only the distinct ones).

The product of its digits is 19267584, while the sum is 60.

The spelling of 28341778884 in words is "twenty-eight billion, three hundred forty-one million, seven hundred seventy-eight thousand, eight hundred eighty-four".