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87086678044 = 22105899205589
BaseRepresentation
bin101000100011011000…
…1010100000000011100
322022210012221121201011
41101012301110000130
52411323142144134
6104001305425004
76202042356352
oct1210661240034
9268705847634
1087086678044
1133a2a1831a3
1214a6519b164
13829b398932
1443020197d2
1523ea70a264
hex1446c5401c

87086678044 has 12 divisors (see below), whose sum is σ = 152403867000. Its totient is φ = 43542716048.

The previous prime is 87086678033. The next prime is 87086678047. The reversal of 87086678044 is 44087668078.

It is a self number, because there is not a number n which added to its sum of digits gives 87086678044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87086678047) 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, 320802 + ... + 526390.

It is an arithmetic number, because the mean of its divisors is an integer number (12700322250).

Almost surely, 287086678044 is an apocalyptic number.

It is an amenable number.

87086678044 is a deficient number, since it is larger than the sum of its proper divisors (65317188956).

87086678044 is a wasteful number, since it uses less digits than its factorization.

87086678044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311492 (or 311490 counting only the distinct ones).

The product of its (nonzero) digits is 14450688, while the sum is 58.

The spelling of 87086678044 in words is "eighty-seven billion, eighty-six million, six hundred seventy-eight thousand, forty-four".

Divisors: 1 2 4 105899 205589 211798 411178 423596 822356 21771669511 43543339022 87086678044