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28337087680 = 265114124789
BaseRepresentation
bin11010011001000001…
…011010010011000000
32201010212020012111221
4122121001122103000
5431013243301210
621003510044424
72022135161656
oct323101322300
981125205457
1028337087680
1111021602430
1255aa049714
132897a02905
14152b658dd6
15b0cb4e1da
hex69905a4c0

28337087680 has 168 divisors, whose sum is σ = 75466986480. Its totient is φ = 10050969600.

The previous prime is 28337087671. The next prime is 28337087699. The reversal of 28337087680 is 8678073382.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5914726 + ... + 5919514.

Almost surely, 228337087680 is an apocalyptic number.

28337087680 is a gapful number since it is divisible by the number (20) 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 28337087680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37733493240).

28337087680 is an abundant number, since it is smaller than the sum of its proper divisors (47129898800).

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

28337087680 is a wasteful number, since it uses less digits than its factorization.

28337087680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4899 (or 4848 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 52.

The spelling of 28337087680 in words is "twenty-eight billion, three hundred thirty-seven million, eighty-seven thousand, six hundred eighty".