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87353534140 = 22531257548221
BaseRepresentation
bin101000101011010101…
…1010010011010111100
322100110211002022110021
41101112223102122330
52412400001043030
6104044001221524
76211462534435
oct1212653223274
9270424068407
1087353534140
113405687a124
1214b1a6318a4
138311760752
14432964248c
152413d6d97a
hex1456ad26bc

87353534140 has 48 divisors (see below), whose sum is σ = 190097074944. Its totient is φ = 33682636800.

The previous prime is 87353534129. The next prime is 87353534153. The reversal of 87353534140 is 4143535378.

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 15 ways as a sum of consecutive naturals, for example, 114771 + ... + 433450.

It is an arithmetic number, because the mean of its divisors is an integer number (3960355728).

Almost surely, 287353534140 is an apocalyptic number.

It is an amenable number.

87353534140 is an abundant number, since it is smaller than the sum of its proper divisors (102743540804).

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

87353534140 is a wasteful number, since it uses less digits than its factorization.

87353534140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548518 (or 548516 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 43.

The spelling of 87353534140 in words is "eighty-seven billion, three hundred fifty-three million, five hundred thirty-four thousand, one hundred forty".

Divisors: 1 2 4 5 10 20 31 62 124 155 257 310 514 620 1028 1285 2570 5140 7967 15934 31868 39835 79670 159340 548221 1096442 2192884 2741105 5482210 10964420 16994851 33989702 67979404 84974255 140892797 169948510 281785594 339897020 563571188 704463985 1408927970 2817855940 4367676707 8735353414 17470706828 21838383535 43676767070 87353534140