Search a number
-
+
87048308787 = 3115021525359
BaseRepresentation
bin101000100010001111…
…0111100100000110011
322022200112202020222120
41101010132330200303
52411233331340122
6103553415205323
76201065262546
oct1210436744063
9268615666876
1087048308787
1133a0a556870
1214a54376843
13829345342b
1442dacac85d
1523e717b75c
hex14447bc833

87048308787 has 16 divisors (see below), whose sum is σ = 126641180160. Its totient is φ = 52745943200.

The previous prime is 87048308783. The next prime is 87048308797. The reversal of 87048308787 is 78780384078.

It is a cyclic number.

It is not a de Polignac number, because 87048308787 - 22 = 87048308783 is a prime.

It is a super-2 number, since 2×870483087872 (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 87048308787.

It is not an unprimeable number, because it can be changed into a prime (87048308783) 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, 96987 + ... + 428372.

It is an arithmetic number, because the mean of its divisors is an integer number (7915073760).

Almost surely, 287048308787 is an apocalyptic number.

87048308787 is a deficient number, since it is larger than the sum of its proper divisors (39592871373).

87048308787 is a wasteful number, since it uses less digits than its factorization.

87048308787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530394.

The product of its (nonzero) digits is 16859136, while the sum is 60.

The spelling of 87048308787 in words is "eighty-seven billion, forty-eight million, three hundred eight thousand, seven hundred eighty-seven".

Divisors: 1 3 11 33 5021 15063 55231 165693 525359 1576077 5778949 17336847 2637827539 7913482617 29016102929 87048308787