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12808926 = 23213194367
BaseRepresentation
bin110000110111…
…001011011110
3220002202112200
4300313023132
511234341201
61134312330
7213605544
oct60671336
926082480
1012808926
117259599
1243586a6
132866260
1419b5d94
1511d0386
hexc372de

12808926 has 96 divisors (see below), whose sum is σ = 32672640. Its totient is φ = 3592512.

The previous prime is 12808903. The next prime is 12808937. The reversal of 12808926 is 62980821.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 191145 + ... + 191211.

It is an arithmetic number, because the mean of its divisors is an integer number (340340).

Almost surely, 212808926 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12808926, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16336320).

12808926 is an abundant number, since it is smaller than the sum of its proper divisors (19863714).

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

12808926 is a wasteful number, since it uses less digits than its factorization.

12808926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 12808926 is about 3578.9559930237. The cubic root of 12808926 is about 233.9757809692.

The spelling of 12808926 in words is "twelve million, eight hundred eight thousand, nine hundred twenty-six".

Divisors: 1 2 3 6 9 13 18 19 26 38 39 43 57 67 78 86 114 117 129 134 171 201 234 247 258 342 387 402 494 559 603 741 774 817 871 1118 1206 1273 1482 1634 1677 1742 2223 2451 2546 2613 2881 3354 3819 4446 4902 5031 5226 5762 7353 7638 7839 8643 10062 10621 11457 14706 15678 16549 17286 21242 22914 25929 31863 33098 37453 49647 51858 54739 63726 74906 95589 99294 109478 112359 148941 164217 191178 224718 297882 328434 337077 492651 674154 711607 985302 1423214 2134821 4269642 6404463 12808926