28774869781424 has 40 divisors (see below), whose sum is σ = 60048092457360. Its totient is φ = 13278890896128.

The previous prime is 28774869781423. The next prime is 28774869781433. The reversal of 28774869781424 is 42418796847782.

It is not an unprimeable number, because it can be changed into a prime (28774869781421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7946459 + ... + 10986170.

It is an arithmetic number, because the mean of its divisors is an integer number (1501202311434).

Almost surely, 2^{28774869781424} is an apocalyptic number.

It is an amenable number.

28774869781424 is an abundant number, since it is smaller than the sum of its proper divisors (31273222675936).

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

28774869781424 is a wasteful number, since it uses less digits than its factorization.

28774869781424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18939957 (or 18939951 counting only the distinct ones).

The product of its digits is 2427715584, while the sum is 77.

The spelling of 28774869781424 in words is "twenty-eight trillion, seven hundred seventy-four billion, eight hundred sixty-nine million, seven hundred eighty-one thousand, four hundred twenty-four".