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87080286386 = 243540143193
BaseRepresentation
bin101000100011001100…
…0111011100010110010
322022202202220220000002
41101012120323202302
52411320023131021
6104000520430002
76201634135652
oct1210630734262
9268682826002
1087080286386
1133a26608035
1214a63018302
138299c6b5a2
144301234362
1523e9d9650b
hex144663b8b2

87080286386 has 4 divisors (see below), whose sum is σ = 130620429582. Its totient is φ = 43540143192.

The previous prime is 87080286383. The next prime is 87080286451. The reversal of 87080286386 is 68368208078.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 59812039225 + 27268247161 = 244565^2 + 165131^2 .

It is not an unprimeable number, because it can be changed into a prime (87080286383) 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 as a sum of consecutive naturals, namely, 21770071595 + ... + 21770071598.

Almost surely, 287080286386 is an apocalyptic number.

87080286386 is a deficient number, since it is larger than the sum of its proper divisors (43540143196).

87080286386 is a wasteful number, since it uses less digits than its factorization.

87080286386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43540143195.

The product of its (nonzero) digits is 6193152, while the sum is 56.

The spelling of 87080286386 in words is "eighty-seven billion, eighty million, two hundred eighty-six thousand, three hundred eighty-six".

Divisors: 1 2 43540143193 87080286386