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28868886882 = 23211329371123
BaseRepresentation
bin11010111000101110…
…000100000101100010
32202111220220101212200
4122320232010011202
5433110413340012
621132344234030
72041253326653
oct327056040542
982456811780
1028868886882
1111274809000
12571816b916
132950c3c8b4
14157c12b52a
15b3e6993dc
hex6b8b84162

28868886882 has 192 divisors, whose sum is σ = 73160530560. Its totient is φ = 8210885760.

The previous prime is 28868886869. The next prime is 28868886899.

28868886882 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 28868886882.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 25706373 + ... + 25707495.

It is an arithmetic number, because the mean of its divisors is an integer number (381044430).

Almost surely, 228868886882 is an apocalyptic number.

28868886882 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 28868886882, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36580265280).

28868886882 is an abundant number, since it is smaller than the sum of its proper divisors (44291643678).

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

28868886882 is a wasteful number, since it uses less digits than its factorization.

28868886882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1230 (or 1205 counting only the distinct ones).

The product of its digits is 301989888, while the sum is 72.

The spelling of 28868886882 in words is "twenty-eight billion, eight hundred sixty-eight million, eight hundred eighty-six thousand, eight hundred eighty-two".