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28330330808 = 2313283962569
BaseRepresentation
bin11010011000100111…
…101000101010111000
32201010101111220211102
4122120213220222320
5431010031041213
621003105150532
72022023560433
oct323047505270
981111456742
1028330330808
111101880793a
1255a792b448
1328964a8270
14152a7ba81a
15b0c267158
hex6989e8ab8

28330330808 has 32 divisors (see below), whose sum is σ = 57407674800. Its totient is φ = 13029320448.

The previous prime is 28330330801. The next prime is 28330330813. The reversal of 28330330808 is 80803303382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28330330801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 451853 + ... + 510716.

Almost surely, 228330330808 is an apocalyptic number.

It is an amenable number.

28330330808 is an abundant number, since it is smaller than the sum of its proper divisors (29077343992).

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

28330330808 is a wasteful number, since it uses less digits than its factorization.

28330330808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962871 (or 962867 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 38.

The spelling of 28330330808 in words is "twenty-eight billion, three hundred thirty million, three hundred thirty thousand, eight hundred eight".

Divisors: 1 2 4 8 13 26 52 104 283 566 1132 2264 3679 7358 14716 29432 962569 1925138 3850276 7700552 12513397 25026794 50053588 100107176 272407027 544814054 1089628108 2179256216 3541291351 7082582702 14165165404 28330330808