28739319888 has 40 divisors (see below), whose sum is σ = 74496669408. Its totient is φ = 9547073152.

The previous prime is 28739319887. The next prime is 28739319929. The reversal of 28739319888 is 88891393782.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28739319887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1007670 + ... + 1035797.

Almost surely, 2^28739319888 is an apocalyptic number.

It is an amenable number.

28739319888 is an abundant number, since it is smaller than the sum of its proper divisors (45757349520).

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

28739319888 is a wasteful number, since it uses less digits than its factorization.

28739319888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2043771 (or 2043765 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 66.

The spelling of 28739319888 in words is "twenty-eight billion, seven hundred thirty-nine million, three hundred nineteen thousand, eight hundred eighty-eight".