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38781268334830 = 25711314683333911
BaseRepresentation
bin10001101000101011101111…
…01110010001100011101110
312002022110020021021201101101
420310111313232101203232
520040343014143203310
6214251511351033314
711111565660601660
oct1064256756214356
9162273207251341
1038781268334830
11113a2052a4976a
1244240a036b83a
13188409a304218
14981048306530
15473bca7ed43a
hex234577b918ee

38781268334830 has 64 divisors (see below), whose sum is σ = 80490337072128. Its totient is φ = 13177830274560.

The previous prime is 38781268334777. The next prime is 38781268334843. The reversal of 38781268334830 is 3843386218783.

It is a super-2 number, since 2×387812683348302 (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115975575 + ... + 116309485.

It is an arithmetic number, because the mean of its divisors is an integer number (1257661516752).

Almost surely, 238781268334830 is an apocalyptic number.

38781268334830 is an abundant number, since it is smaller than the sum of its proper divisors (41709068737298).

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

38781268334830 is a wasteful number, since it uses less digits than its factorization.

38781268334830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348721.

The product of its (nonzero) digits is 111476736, while the sum is 64.

The spelling of 38781268334830 in words is "thirty-eight trillion, seven hundred eighty-one billion, two hundred sixty-eight million, three hundred thirty-four thousand, eight hundred thirty".

Divisors: 1 2 5 7 10 14 35 70 113 226 565 791 1130 1582 3955 7910 14683 29366 73415 102781 146830 205562 333911 513905 667822 1027810 1659179 1669555 2337377 3318358 3339110 4674754 8295895 11614253 11686885 16591790 23228506 23373770 37731943 58071265 75463886 116142530 188659715 264123601 377319430 528247202 1320618005 2641236010 4902815213 9805630426 24514076065 34319706491 49028152130 68639412982 171598532455 343197064910 554018119069 1108036238138 2770090595345 3878126833483 5540181190690 7756253666966 19390634167415 38781268334830