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87044355740 = 22517256012811
BaseRepresentation
bin101000100010000111…
…1110111011010011100
322022200021022102102102
41101010033313122130
52411231323340430
6103553154344232
76201016546616
oct1210417673234
9268607272372
1087044355740
1133a082a6891
1214a52b8b078
13829269b054
1442da55ddb6
1523e6b4a345
hex14443f769c

87044355740 has 24 divisors (see below), whose sum is σ = 193545685872. Its totient is φ = 32769639680.

The previous prime is 87044355683. The next prime is 87044355773. The reversal of 87044355740 is 4755344078.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128006066 + ... + 128006745.

It is an arithmetic number, because the mean of its divisors is an integer number (8064403578).

Almost surely, 287044355740 is an apocalyptic number.

It is an amenable number.

87044355740 is an abundant number, since it is smaller than the sum of its proper divisors (106501330132).

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

87044355740 is a wasteful number, since it uses less digits than its factorization.

87044355740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256012837 (or 256012835 counting only the distinct ones).

The product of its (nonzero) digits is 1881600, while the sum is 47.

The spelling of 87044355740 in words is "eighty-seven billion, forty-four million, three hundred fifty-five thousand, seven hundred forty".

Divisors: 1 2 4 5 10 17 20 34 68 85 170 340 256012811 512025622 1024051244 1280064055 2560128110 4352217787 5120256220 8704435574 17408871148 21761088935 43522177870 87044355740