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12628008 = 23331719181
BaseRepresentation
bin110000001011…
…000000101000
3212202120101000
4300023000220
511213044013
61130355000
7212223231
oct60130050
925676330
1012628008
117145678
12428ba60
132801ac3
14196a088
151196973
hexc0b028

12628008 has 128 divisors (see below), whose sum is σ = 39312000. Its totient is φ = 3732480.

The previous prime is 12628001. The next prime is 12628009. The reversal of 12628008 is 80082621.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12628001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69678 + ... + 69858.

It is an arithmetic number, because the mean of its divisors is an integer number (307125).

Almost surely, 212628008 is an apocalyptic number.

12628008 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12628008 is the 2052-nd octagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12628008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19656000).

12628008 is an abundant number, since it is smaller than the sum of its proper divisors (26683992).

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

12628008 is a wasteful number, since it uses less digits than its factorization.

12628008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 12628008 is about 3553.5908599612. The cubic root of 12628008 is about 232.8689667067.

The spelling of 12628008 in words is "twelve million, six hundred twenty-eight thousand, eight".

Divisors: 1 2 3 4 6 8 9 12 17 18 19 24 27 34 36 38 51 54 57 68 72 76 102 108 114 136 152 153 171 181 204 216 228 306 323 342 362 408 456 459 513 543 612 646 684 724 918 969 1026 1086 1224 1292 1368 1448 1629 1836 1938 2052 2172 2584 2907 3077 3258 3439 3672 3876 4104 4344 4887 5814 6154 6516 6878 7752 8721 9231 9774 10317 11628 12308 13032 13756 17442 18462 19548 20634 23256 24616 27512 27693 30951 34884 36924 39096 41268 55386 58463 61902 69768 73848 82536 83079 92853 110772 116926 123804 166158 175389 185706 221544 233852 247608 332316 350778 371412 467704 526167 664632 701556 742824 1052334 1403112 1578501 2104668 3157002 4209336 6314004 12628008