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12818982 = 2311217657
BaseRepresentation
bin110000111001…
…101000100110
3220010021100010
4300321220212
511240201412
61134431050
7213650061
oct60715046
926107303
1012818982
117266100
124362486
13286a9c7
1419b98d8
1511d333c
hexc39a26

12818982 has 24 divisors (see below), whose sum is σ = 28182168. Its totient is φ = 3884320.

The previous prime is 12818959. The next prime is 12819007. The reversal of 12818982 is 28981821.

It is a self number, because there is not a number n which added to its sum of digits gives 12818982.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 8103 + ... + 9554.

It is an arithmetic number, because the mean of its divisors is an integer number (1174257).

Almost surely, 212818982 is an apocalyptic number.

12818982 is an abundant number, since it is smaller than the sum of its proper divisors (15363186).

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

12818982 is a wasteful number, since it uses less digits than its factorization.

12818982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17684 (or 17673 counting only the distinct ones).

The product of its digits is 18432, while the sum is 39.

The square root of 12818982 is about 3580.3605963646. The cubic root of 12818982 is about 234.0369946623.

It can be divided in two parts, 128189 and 82, that added together give a triangular number (128271 = T506).

The spelling of 12818982 in words is "twelve million, eight hundred eighteen thousand, nine hundred eighty-two".

Divisors: 1 2 3 6 11 22 33 66 121 242 363 726 17657 35314 52971 105942 194227 388454 582681 1165362 2136497 4272994 6409491 12818982