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87347420868 = 22319493734711
BaseRepresentation
bin101000101011001001…
…1111101111011000100
322100110101120201121210
41101112103331323010
52412341414431433
6104043222211420
76211356553461
oct1212623757304
9270411521553
1087347420868
1134053384134
1214b18583b70
138310400026
1443288d0668
152413562463
hex14564fdec4

87347420868 has 24 divisors (see below), whose sum is σ = 203915275200. Its totient is φ = 29100860320.

The previous prime is 87347420857. The next prime is 87347420921. The reversal of 87347420868 is 86802474378.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1843968 + ... + 1890743.

It is an arithmetic number, because the mean of its divisors is an integer number (8496469800).

Almost surely, 287347420868 is an apocalyptic number.

It is an amenable number.

87347420868 is an abundant number, since it is smaller than the sum of its proper divisors (116567854332).

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

87347420868 is a wasteful number, since it uses less digits than its factorization.

87347420868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3736667 (or 3736665 counting only the distinct ones).

The product of its (nonzero) digits is 14450688, while the sum is 57.

The spelling of 87347420868 in words is "eighty-seven billion, three hundred forty-seven million, four hundred twenty thousand, eight hundred sixty-eight".

Divisors: 1 2 3 4 6 12 1949 3898 5847 7796 11694 23388 3734711 7469422 11204133 14938844 22408266 44816532 7278951739 14557903478 21836855217 29115806956 43673710434 87347420868