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17900983074 = 23131494913137
BaseRepresentation
bin10000101010111110…
…110101001100100010
31201012112212011100010
4100222332311030202
5243130122424244
612120144105350
71202413563012
oct205276651442
951175764303
1017900983074
117656702597
123577005256
1318c38723a0
14c1b613c42
156eb849eb9
hex42afb5322

17900983074 has 64 divisors (see below), whose sum is σ = 38906179200. Its totient is φ = 5458145280.

The previous prime is 17900983039. The next prime is 17900983097. The reversal of 17900983074 is 47038900971.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5704834 + ... + 5707970.

It is an arithmetic number, because the mean of its divisors is an integer number (607909050).

Almost surely, 217900983074 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 17900983074, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19453089600).

17900983074 is an abundant number, since it is smaller than the sum of its proper divisors (21005196126).

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

17900983074 is a wasteful number, since it uses less digits than its factorization.

17900983074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3795.

The product of its (nonzero) digits is 381024, while the sum is 48.

The spelling of 17900983074 in words is "seventeen billion, nine hundred million, nine hundred eighty-three thousand, seventy-four".

Divisors: 1 2 3 6 13 26 39 78 149 298 447 491 894 982 1473 1937 2946 3137 3874 5811 6274 6383 9411 11622 12766 18822 19149 38298 40781 73159 81562 122343 146318 219477 244686 438954 467413 934826 951067 1402239 1540267 1902134 2804478 2853201 3080534 4620801 5706402 6076369 9241602 12152738 18229107 20023471 36458214 40046942 60070413 120140826 229499783 458999566 688499349 1376998698 2983497179 5966994358 8950491537 17900983074