28438575294 has 16 divisors (see below), whose sum is σ = 57678238080. Its totient is φ = 9346010520.

The previous prime is 28438575293. The next prime is 28438575301. The reversal of 28438575294 is 49257583482.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28438575293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33378184 + ... + 33379035.

It is an arithmetic number, because the mean of its divisors is an integer number (3604889880).

Almost surely, 2^28438575294 is an apocalyptic number.

28438575294 is an abundant number, since it is smaller than the sum of its proper divisors (29239662786).

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

28438575294 is a wasteful number, since it uses less digits than its factorization.

28438575294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66757295.

The product of its digits is 19353600, while the sum is 57.

The spelling of 28438575294 in words is "twenty-eight billion, four hundred thirty-eight million, five hundred seventy-five thousand, two hundred ninety-four".