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39803608872 = 23331731975407
BaseRepresentation
bin100101000100011110…
…101101111100101000
310210201222111211112000
4211010132231330220
51123004210440442
630141401251000
72606241043626
oct450436557450
9123658454460
1039803608872
1115976110525
12786a193a60
1339a448cab1
141cd8488516
15107e641d4c
hex9447adf28

39803608872 has 128 divisors (see below), whose sum is σ = 111789849600. Its totient is φ = 13121789184.

The previous prime is 39803608853. The next prime is 39803608891. The reversal of 39803608872 is 27880630893.

39803608872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (39803608853) and next prime (39803608891).

It is a super-2 number, since 2×398036088722 (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 7358793 + ... + 7364199.

It is an arithmetic number, because the mean of its divisors is an integer number (873358200).

Almost surely, 239803608872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39803608872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55894924800).

39803608872 is an abundant number, since it is smaller than the sum of its proper divisors (71986240728).

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

39803608872 is a wasteful number, since it uses less digits than its factorization.

39803608872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5792 (or 5782 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The spelling of 39803608872 in words is "thirty-nine billion, eight hundred three million, six hundred eight thousand, eight hundred seventy-two".

Divisors: 1 2 3 4 6 8 9 12 18 24 27 36 54 72 108 173 197 216 346 394 519 591 692 788 1038 1182 1384 1557 1576 1773 2076 2364 3114 3546 4152 4671 4728 5319 5407 6228 7092 9342 10638 10814 12456 14184 16221 18684 21276 21628 32442 34081 37368 42552 43256 48663 64884 68162 97326 102243 129768 136324 145989 194652 204486 272648 291978 306729 389304 408972 583956 613458 817944 920187 935411 1065179 1167912 1226916 1840374 1870822 2130358 2453832 2806233 3195537 3680748 3741644 4260716 5612466 6391074 7361496 7483288 8418699 8521432 9586611 11224932 12782148 16837398 19173222 22449864 25256097 25564296 28759833 33674796 38346444 50512194 57519666 67349592 76692888 101024388 115039332 184275967 202048776 230078664 368551934 552827901 737103868 1105655802 1474207736 1658483703 2211311604 3316967406 4422623208 4975451109 6633934812 9950902218 13267869624 19901804436 39803608872