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87688027 = 712526861
BaseRepresentation
bin1010011101000…
…00001101011011
320010000000100201
411032200031123
5134422004102
612411243031
72113223140
oct516401533
9203000321
1087688027
1145552349
1225449477
131522280b
14b9083c7
157a71987
hex53a035b

87688027 has 4 divisors (see below), whose sum is σ = 100214896. Its totient is φ = 75161160.

The previous prime is 87688019. The next prime is 87688031. The reversal of 87688027 is 72088678.

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

It is a cyclic number.

It is not a de Polignac number, because 87688027 - 23 = 87688019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87688037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6263424 + ... + 6263437.

It is an arithmetic number, because the mean of its divisors is an integer number (25053724).

Almost surely, 287688027 is an apocalyptic number.

87688027 is a deficient number, since it is larger than the sum of its proper divisors (12526869).

87688027 is a wasteful number, since it uses less digits than its factorization.

87688027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12526868.

The product of its (nonzero) digits is 301056, while the sum is 46.

The square root of 87688027 is about 9364.1885393236. The cubic root of 87688027 is about 444.2697732202.

The spelling of 87688027 in words is "eighty-seven million, six hundred eighty-eight thousand, twenty-seven".

Divisors: 1 7 12526861 87688027