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87144063 = 3471514093
BaseRepresentation
bin1010011000110…
…11011001111111
320001222101011220
411030123121333
5134302102223
612351444423
72105466216
oct514333177
9201871156
1087144063
1145210696
1225226713
1315092046
14b80607d
1579b56e3
hex531b67f

87144063 has 16 divisors (see below), whose sum is σ = 119479296. Its totient is φ = 56469600.

The previous prime is 87144061. The next prime is 87144067. The reversal of 87144063 is 36044178.

It is not a de Polignac number, because 87144063 - 21 = 87144061 is a prime.

It is a super-2 number, since 2×871440632 = 15188175432295938, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87144061) 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 15 ways as a sum of consecutive naturals, for example, 19245 + ... + 23337.

It is an arithmetic number, because the mean of its divisors is an integer number (7467456).

Almost surely, 287144063 is an apocalyptic number.

87144063 is a deficient number, since it is larger than the sum of its proper divisors (32335233).

87144063 is a wasteful number, since it uses less digits than its factorization.

87144063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4294.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 87144063 is about 9335.0984461868. The cubic root of 87144063 is about 443.3492058437.

The spelling of 87144063 in words is "eighty-seven million, one hundred forty-four thousand, sixty-three".

Divisors: 1 3 47 141 151 453 4093 7097 12279 21291 192371 577113 618043 1854129 29048021 87144063