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12885808 = 2413411511
BaseRepresentation
bin110001001001…
…111100110000
3220020200000011
4301021330300
511244321213
61140104304
7214345645
oct61117460
926220004
1012885808
117301331
124395094
132892250
1419d5dcc
1511e803d
hexc49f30

12885808 has 40 divisors (see below), whose sum is σ = 27560736. Its totient is φ = 5798400.

The previous prime is 12885799. The next prime is 12885811. The reversal of 12885808 is 80858821.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7773 + ... + 9283.

Almost surely, 212885808 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 12885808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13780368).

12885808 is an abundant number, since it is smaller than the sum of its proper divisors (14674928).

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

12885808 is a wasteful number, since it uses less digits than its factorization.

12885808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1573 (or 1567 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 40.

The square root of 12885808 is about 3589.6807657506. The cubic root of 12885808 is about 234.4429722377.

The spelling of 12885808 in words is "twelve million, eight hundred eighty-five thousand, eight hundred eight".

Divisors: 1 2 4 8 13 16 26 41 52 82 104 164 208 328 533 656 1066 1511 2132 3022 4264 6044 8528 12088 19643 24176 39286 61951 78572 123902 157144 247804 314288 495608 805363 991216 1610726 3221452 6442904 12885808