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38678651488828 = 221319433592536013
BaseRepresentation
bin10001100101101100100110…
…10010000100101000111100
312001221122100201120211021101
420302312103102010220330
520032202334240120303
6214132421023542444
711101304020030561
oct1062662322045074
9161848321524241
1038678651488828
111136258446251a
12440822215aa24
1318774c5603bc0
1497a0b18da868
154711c19a6d1d
hex232d93484a3c

38678651488828 has 96 divisors (see below), whose sum is σ = 78734105049600. Its totient is φ = 16472797818624.

The previous prime is 38678651488817. The next prime is 38678651488993. The reversal of 38678651488828 is 82888415687683.

It is a super-2 number, since 2×386786514888282 (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, 13983750 + ... + 16519762.

It is an arithmetic number, because the mean of its divisors is an integer number (820146927600).

Almost surely, 238678651488828 is an apocalyptic number.

38678651488828 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

38678651488828 is an abundant number, since it is smaller than the sum of its proper divisors (40055453560772).

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

38678651488828 is a wasteful number, since it uses less digits than its factorization.

38678651488828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2536451 (or 2536449 counting only the distinct ones).

The product of its digits is 7927234560, while the sum is 82.

The spelling of 38678651488828 in words is "thirty-eight trillion, six hundred seventy-eight billion, six hundred fifty-one million, four hundred eighty-eight thousand, eight hundred twenty-eight".

Divisors: 1 2 4 13 19 26 38 43 52 76 86 172 247 359 494 559 718 817 988 1118 1436 1634 2236 3268 4667 6821 9334 10621 13642 15437 18668 21242 27284 30874 42484 61748 88673 177346 200681 293303 354692 401362 586606 802724 1173212 2536013 3812939 5072026 7625878 10144052 15251756 32968169 48184247 65936338 96368494 109048559 131872676 192736988 218097118 436194236 626395211 910428667 1252790422 1417631267 1820857334 2071922621 2505580844 2835262534 3641714668 4143845242 5670525068 8287690484 11835572671 17298144673 23671145342 26934994073 34596289346 39148432681 47342290684 53869988146 69192578692 78296865362 107739976292 156593730724 224875880749 449751761498 508929624853 743820220939 899503522996 1017859249706 1487640441878 2035718499412 2975280883756 9669662872207 19339325744414 38678651488828