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12000163808 = 252923815431
BaseRepresentation
bin10110010110100001…
…11111011111100000
31010222022102111001102
423023100333133200
5144034020220213
65302433053532
7603242465213
oct131320773740
933868374042
1012000163808
1150a8863756
1223aa9b72a8
1311931c1259
1481ba6177a
154a37a4158
hex2cb43f7e0

12000163808 has 48 divisors (see below), whose sum is σ = 24454755360. Its totient is φ = 5789683200.

The previous prime is 12000163793. The next prime is 12000163871. The reversal of 12000163808 is 80836100021.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2206853 + ... + 2212283.

It is an arithmetic number, because the mean of its divisors is an integer number (509474070).

Almost surely, 212000163808 is an apocalyptic number.

It is an amenable number.

12000163808 is an abundant number, since it is smaller than the sum of its proper divisors (12454591552).

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

12000163808 is a wasteful number, since it uses less digits than its factorization.

12000163808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7851 (or 7843 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

Adding to 12000163808 its reverse (80836100021), we get a palindrome (92836263829).

The spelling of 12000163808 in words is "twelve billion, one hundred sixty-three thousand, eight hundred eight".

Divisors: 1 2 4 8 16 29 32 58 116 232 464 928 2381 4762 5431 9524 10862 19048 21724 38096 43448 69049 76192 86896 138098 157499 173792 276196 314998 552392 629996 1104784 1259992 2209568 2519984 5039968 12931211 25862422 51724844 103449688 206899376 375005119 413798752 750010238 1500020476 3000040952 6000081904 12000163808