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8128041904 = 2417227131641
BaseRepresentation
bin1111001000111100…
…00001001110110000
3202222110100022101001
413210132001032300
5113121234320104
63422312051344
7405264134113
oct74436011660
922873308331
108128041904
1134a1082204
1216aa093b54
139c6c24568
145716b857a
1532888daa4
hex1e47813b0

8128041904 has 40 divisors (see below), whose sum is σ = 16748021808. Its totient is φ = 3808081920.

The previous prime is 8128041877. The next prime is 8128041907. The reversal of 8128041904 is 4091408218.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (8128041907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4077 + ... + 127564.

Almost surely, 28128041904 is an apocalyptic number.

It is an amenable number.

8128041904 is an abundant number, since it is smaller than the sum of its proper divisors (8619979904).

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

8128041904 is a wasteful number, since it uses less digits than its factorization.

8128041904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131893 (or 131887 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 8128041904 is about 90155.6537550474. The cubic root of 8128041904 is about 2010.6137333611.

The spelling of 8128041904 in words is "eight billion, one hundred twenty-eight million, forty-one thousand, nine hundred four".

Divisors: 1 2 4 8 16 17 34 68 136 227 272 454 908 1816 3632 3859 7718 15436 30872 61744 131641 263282 526564 1053128 2106256 2237897 4475794 8951588 17903176 29882507 35806352 59765014 119530028 239060056 478120112 508002619 1016005238 2032010476 4064020952 8128041904