28869739272 has 288 divisors, whose sum is σ = 89394308640. Its totient is φ = 8345894400.

The previous prime is 28869739271. The next prime is 28869739321. The reversal of 28869739272 is 27293796882.

It is not an unprimeable number, because it can be changed into a prime (28869739271) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 63172068 + ... + 63172524.

It is an arithmetic number, because the mean of its divisors is an integer number (310396905).

Almost surely, 2^28869739272 is an apocalyptic number.

28869739272 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28869739272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44697154320).

28869739272 is an abundant number, since it is smaller than the sum of its proper divisors (60524569368).

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

28869739272 is a wasteful number, since it uses less digits than its factorization.

28869739272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625 (or 587 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 63.

The spelling of 28869739272 in words is "twenty-eight billion, eight hundred sixty-nine million, seven hundred thirty-nine thousand, two hundred seventy-two".