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87428043093 = 3134512166581
BaseRepresentation
bin101000101101100011…
…1100001000101010101
322100200000021202112010
41101123013201011111
52413023034334333
6104055222214433
76213356050626
oct1213307410525
9270600252463
1087428043093
113409493a876
1214b3b584419
13832401a6a1
1443354b9a4d
15241a68a563
hex145b1e1155

87428043093 has 8 divisors (see below), whose sum is σ = 116579444256. Its totient is φ = 58281002000.

The previous prime is 87428043091. The next prime is 87428043211. The reversal of 87428043093 is 39034082478.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87428043093 - 21 = 87428043091 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87428043091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1042938 + ... + 1123643.

It is an arithmetic number, because the mean of its divisors is an integer number (14572430532).

Almost surely, 287428043093 is an apocalyptic number.

It is an amenable number.

87428043093 is a deficient number, since it is larger than the sum of its proper divisors (29151401163).

87428043093 is a wasteful number, since it uses less digits than its factorization.

87428043093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2180035.

The product of its (nonzero) digits is 1161216, while the sum is 48.

The spelling of 87428043093 in words is "eighty-seven billion, four hundred twenty-eight million, forty-three thousand, ninety-three".

Divisors: 1 3 13451 40353 2166581 6499743 29142681031 87428043093