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38161636680 = 23352391330601
BaseRepresentation
bin100011100010100111…
…000101110101001000
310122111112212000010010
4203202213011311020
51111123334333210
625310424151520
72520452362656
oct434247056510
9118445760103
1038161636680
1115203281512
1274903085a0
1337a224c90b
141bc0389dd6
15ed5401920
hex8e29c5d48

38161636680 has 64 divisors (see below), whose sum is σ = 114964012800. Its totient is φ = 10133849600.

The previous prime is 38161636673. The next prime is 38161636717. The reversal of 38161636680 is 8663616183.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 636621 + ... + 693980.

It is an arithmetic number, because the mean of its divisors is an integer number (1796312700).

Almost surely, 238161636680 is an apocalyptic number.

38161636680 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38161636680 is an abundant number, since it is smaller than the sum of its proper divisors (76802376120).

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

38161636680 is a wasteful number, since it uses less digits than its factorization.

38161636680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330854 (or 1330850 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 48.

The spelling of 38161636680 in words is "thirty-eight billion, one hundred sixty-one million, six hundred thirty-six thousand, six hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 239 478 717 956 1195 1434 1912 2390 2868 3585 4780 5736 7170 9560 14340 28680 1330601 2661202 3991803 5322404 6653005 7983606 10644808 13306010 15967212 19959015 26612020 31934424 39918030 53224040 79836060 159672120 318013639 636027278 954040917 1272054556 1590068195 1908081834 2544109112 3180136390 3816163668 4770204585 6360272780 7632327336 9540409170 12720545560 19080818340 38161636680