28673170938 has 256 divisors, whose sum is σ = 73813524480. Its totient is φ = 8196249600.

The previous prime is 28673170937. The next prime is 28673171011. The reversal of 28673170938 is 83907137682.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (28673170937) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 46471606 + ... + 46472222.

It is an arithmetic number, because the mean of its divisors is an integer number (288334080).

Almost surely, 2^28673170938 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28673170938, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36906762240).

28673170938 is an abundant number, since it is smaller than the sum of its proper divisors (45140353542).

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

28673170938 is a wasteful number, since it uses less digits than its factorization.

28673170938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770 (or 764 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The spelling of 28673170938 in words is "twenty-eight billion, six hundred seventy-three million, one hundred seventy thousand, nine hundred thirty-eight".