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18068292 = 22331167227
BaseRepresentation
bin100010011101…
…1001101000100
31020222222001000
41010323031010
514111141132
61443133300
7306402144
oct104731504
936888030
1018068292
11a220a80
126074230
1339880c8
142584924
1518bd87c
hex113b344

18068292 has 96 divisors (see below), whose sum is σ = 52093440. Its totient is φ = 5369760.

The previous prime is 18068279. The next prime is 18068333. The reversal of 18068292 is 29286081.

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

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 31 ways as a sum of consecutive naturals, for example, 79483 + ... + 79709.

It is an arithmetic number, because the mean of its divisors is an integer number (542640).

Almost surely, 218068292 is an apocalyptic number.

18068292 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18068292, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26046720).

18068292 is an abundant number, since it is smaller than the sum of its proper divisors (34025148).

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

18068292 is a wasteful number, since it uses less digits than its factorization.

18068292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318 (or 310 counting only the distinct ones).

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

The square root of 18068292 is about 4250.6813571473. The cubic root of 18068292 is about 262.4051575739.

The spelling of 18068292 in words is "eighteen million, sixty-eight thousand, two hundred ninety-two".

Divisors: 1 2 3 4 6 9 11 12 18 22 27 33 36 44 54 66 67 99 108 132 134 198 201 227 268 297 396 402 454 594 603 681 737 804 908 1188 1206 1362 1474 1809 2043 2211 2412 2497 2724 2948 3618 4086 4422 4994 6129 6633 7236 7491 8172 8844 9988 12258 13266 14982 15209 19899 22473 24516 26532 29964 30418 39798 44946 45627 60836 67419 79596 89892 91254 134838 136881 167299 182508 269676 273762 334598 410643 501897 547524 669196 821286 1003794 1505691 1642572 2007588 3011382 4517073 6022764 9034146 18068292