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12708005888 = 211472532
BaseRepresentation
bin10111101010111010…
…01100100000000000
31012210122100120211202
423311131030200000
5202011222142023
65501000400332
7626626160564
oct136535144000
935718316752
1012708005888
115431379a06
122567a760a8
131276a47c16
14887a7b6a4
154e59c5128
hex2f574c800

12708005888 has 108 divisors (see below), whose sum is σ = 26461034145. Its totient is φ = 6101475328.

The previous prime is 12708005867. The next prime is 12708005897. The reversal of 12708005888 is 88850080721.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 12054283264 + 653722624 = 109792^2 + 25568^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=79712.

It is a super-2 number, since 2×127080058882 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 239773670 + ... + 239773722.

Almost surely, 212708005888 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 12708005888

12708005888 is an abundant number, since it is smaller than the sum of its proper divisors (13753028257).

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

12708005888 is an frugal number, since it uses more digits than its factorization.

12708005888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 47.

The spelling of 12708005888 in words is "twelve billion, seven hundred eight million, five thousand, eight hundred eighty-eight".

Divisors: 1 2 4 8 16 32 47 53 64 94 106 128 188 212 256 376 424 512 752 848 1024 1504 1696 2048 2209 2491 2809 3008 3392 4418 4982 5618 6016 6784 8836 9964 11236 12032 13568 17672 19928 22472 24064 27136 35344 39856 44944 48128 54272 70688 79712 89888 96256 108544 117077 132023 141376 159424 179776 234154 264046 282752 318848 359552 468308 528092 565504 637696 719104 936616 1056184 1131008 1275392 1438208 1873232 2112368 2262016 2550784 2876416 3746464 4224736 4524032 5101568 5752832 6205081 7492928 8449472 12410162 14985856 16898944 24820324 29971712 33797888 49640648 59943424 67595776 99281296 119886848 135191552 198562592 239773696 270383104 397125184 794250368 1588500736 3177001472 6354002944 12708005888