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19608085 = 572163491
BaseRepresentation
bin100101011001…
…1001000010101
31100220012020101
41022303020111
520004424320
61540134101
7325444300
oct112631025
940805211
1019608085
1110082932
126697331
1340a6c23
142865b37
151ac4c0a
hex12b3215

19608085 has 24 divisors (see below), whose sum is σ = 27595296. Its totient is φ = 13335840.

The previous prime is 19608079. The next prime is 19608097. The reversal of 19608085 is 58080691.

19608085 = T1 + T2 + ... + T489.

19608085 is a nontrivial binomial coefficient, being equal to C(491, 3).

It is not a de Polignac number, because 19608085 - 23 = 19608077 is a prime.

It is a Duffinian number.

19608085 is a modest number, since divided by 8085 gives 1960 as remainder.

It is a congruent number.

It is an unprimeable number.

It is the 489-th tetrahedral 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 23 ways as a sum of consecutive naturals, for example, 39690 + ... + 40180.

It is an arithmetic number, because the mean of its divisors is an integer number (1149804).

Almost surely, 219608085 is an apocalyptic number.

It is an amenable number.

19608085 is a deficient number, since it is larger than the sum of its proper divisors (7987211).

19608085 is a wasteful number, since it uses less digits than its factorization.

19608085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673 (or 666 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 19608085 is about 4428.1017377653. The cubic root of 19608085 is about 269.6570176244.

The spelling of 19608085 in words is "nineteen million, six hundred eight thousand, eighty-five".

Divisors: 1 5 7 35 49 163 245 491 815 1141 2455 3437 5705 7987 17185 24059 39935 80033 120295 400165 560231 2801155 3921617 19608085