28769568352 has 144 divisors (see below), whose sum is σ = 71594772480. Its totient is φ = 11303712000.

The previous prime is 28769568341. The next prime is 28769568361. The reversal of 28769568352 is 25386596782.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 907977 + ... + 939127.

It is an arithmetic number, because the mean of its divisors is an integer number (497185920).

Almost surely, 2^28769568352 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28769568352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35797386240).

28769568352 is an abundant number, since it is smaller than the sum of its proper divisors (42825204128).

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

28769568352 is a wasteful number, since it uses less digits than its factorization.

28769568352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31225 (or 31210 counting only the distinct ones).

The product of its digits is 43545600, while the sum is 61.

The spelling of 28769568352 in words is "twenty-eight billion, seven hundred sixty-nine million, five hundred sixty-eight thousand, three hundred fifty-two".