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1028110806 = 23447135029
BaseRepresentation
bin111101010001111…
…011100111010110
32122122120102220000
4331101323213112
54101144021211
6250003552130
734322540412
oct7521734726
92578512800
101028110806
11488383958
1224838b646
131350002b8
149a787d42
15603d5656
hex3d47b9d6

1028110806 has 40 divisors (see below), whose sum is σ = 2352762720. Its totient is φ = 335409552.

The previous prime is 1028110799. The next prime is 1028110817. The reversal of 1028110806 is 6080118201.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1028110806.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 59901 + ... + 75128.

It is an arithmetic number, because the mean of its divisors is an integer number (58819068).

Almost surely, 21028110806 is an apocalyptic number.

1028110806 is an abundant number, since it is smaller than the sum of its proper divisors (1324651914).

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

1028110806 is a wasteful number, since it uses less digits than its factorization.

1028110806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135090 (or 135081 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 27.

The square root of 1028110806 is about 32064.1670092956. The cubic root of 1028110806 is about 1009.2838127658.

The spelling of 1028110806 in words is "one billion, twenty-eight million, one hundred ten thousand, eight hundred six".

Divisors: 1 2 3 6 9 18 27 47 54 81 94 141 162 282 423 846 1269 2538 3807 7614 135029 270058 405087 810174 1215261 2430522 3645783 6346363 7291566 10937349 12692726 19039089 21874698 38078178 57117267 114234534 171351801 342703602 514055403 1028110806