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89868940 = 2257291703
BaseRepresentation
bin1010101101101…
…00101010001100
320021002211000021
411112310222030
5141001301230
612530111524
72140605400
oct526645214
9207084007
1089868940
1146801957
122611b5a4
13158073b5
14bd15100
157d52c7a
hex55b4a8c

89868940 has 36 divisors (see below), whose sum is σ = 219539376. Its totient is φ = 30811872.

The previous prime is 89868937. The next prime is 89868959. The reversal of 89868940 is 4986898.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44872 + ... + 46831.

It is an arithmetic number, because the mean of its divisors is an integer number (6098316).

Almost surely, 289868940 is an apocalyptic number.

It is an amenable number.

89868940 is an abundant number, since it is smaller than the sum of its proper divisors (129670436).

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

89868940 is a wasteful number, since it uses less digits than its factorization.

89868940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91726 (or 91717 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 52.

The square root of 89868940 is about 9479.9229954678. The cubic root of 89868940 is about 447.9228382732.

The spelling of 89868940 in words is "eighty-nine million, eight hundred sixty-eight thousand, nine hundred forty".

Divisors: 1 2 4 5 7 10 14 20 28 35 49 70 98 140 196 245 490 980 91703 183406 366812 458515 641921 917030 1283842 1834060 2567684 3209605 4493447 6419210 8986894 12838420 17973788 22467235 44934470 89868940