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87286044 = 22343169159
BaseRepresentation
bin1010011001111…
…10000100011100
320002020120221110
411030332010130
5134321123134
612354502020
72106630156
oct514760434
9202216843
1087286044
11452a832a
1225294910
1315111861
14b841ad6
1579e27e9
hex533e11c

87286044 has 24 divisors (see below), whose sum is σ = 208405120. Its totient is φ = 28418544.

The previous prime is 87286021. The next prime is 87286061. The reversal of 87286044 is 44068278.

It is a junction number, because it is equal to n+sod(n) for n = 87285993 and 87286011.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 84064 + ... + 85095.

Almost surely, 287286044 is an apocalyptic number.

It is an amenable number.

87286044 is an abundant number, since it is smaller than the sum of its proper divisors (121119076).

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

87286044 is a wasteful number, since it uses less digits than its factorization.

87286044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169209 (or 169207 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 87286044 is about 9342.7000379976. The cubic root of 87286044 is about 443.5898533662.

The spelling of 87286044 in words is "eighty-seven million, two hundred eighty-six thousand, forty-four".

Divisors: 1 2 3 4 6 12 43 86 129 172 258 516 169159 338318 507477 676636 1014954 2029908 7273837 14547674 21821511 29095348 43643022 87286044