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12808584 = 2333193121
BaseRepresentation
bin110000110111…
…000110001000
3220002202002000
4300313012020
511234333314
61134311000
7213604545
oct60670610
926082060
1012808584
117259308
124358460
132866059
1419b5bcc
1511d0209
hexc37188

12808584 has 64 divisors (see below), whose sum is σ = 37464000. Its totient is φ = 4043520.

The previous prime is 12808583. The next prime is 12808589. The reversal of 12808584 is 48580821.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (12808583) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2544 + ... + 5664.

It is an arithmetic number, because the mean of its divisors is an integer number (585375).

Almost surely, 212808584 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 12808584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18732000).

12808584 is an abundant number, since it is smaller than the sum of its proper divisors (24655416).

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

12808584 is a wasteful number, since it uses less digits than its factorization.

12808584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3155 (or 3145 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 12808584 is about 3578.9082134081. The cubic root of 12808584 is about 233.9736985560.

The spelling of 12808584 in words is "twelve million, eight hundred eight thousand, five hundred eighty-four".

Divisors: 1 2 3 4 6 8 9 12 18 19 24 27 36 38 54 57 72 76 108 114 152 171 216 228 342 456 513 684 1026 1368 2052 3121 4104 6242 9363 12484 18726 24968 28089 37452 56178 59299 74904 84267 112356 118598 168534 177897 224712 237196 337068 355794 474392 533691 674136 711588 1067382 1423176 1601073 2134764 3202146 4269528 6404292 12808584