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87470274775 = 52132316017309
BaseRepresentation
bin101000101110110100…
…0100111100011010111
322100202221202100111111
41101131220213203113
52413114342243100
6104103331315451
76214411032232
oct1213550474327
9270687670444
1087470274775
1134106765094
1214b5174bb87
13832c9b5c50
14433ad50419
15241e22d6ba
hex145da278d7

87470274775 has 48 divisors (see below), whose sum is σ = 121977817920. Its totient is φ = 61737984000.

The previous prime is 87470274757. The next prime is 87470274781. The reversal of 87470274775 is 57747207478.

It is not a de Polignac number, because 87470274775 - 29 = 87470274263 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11963821 + ... + 11971129.

It is an arithmetic number, because the mean of its divisors is an integer number (2541204540).

Almost surely, 287470274775 is an apocalyptic number.

87470274775 is a deficient number, since it is larger than the sum of its proper divisors (34507543145).

87470274775 is a wasteful number, since it uses less digits than its factorization.

87470274775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8956 (or 8951 counting only the distinct ones).

The product of its (nonzero) digits is 21512960, while the sum is 58.

The spelling of 87470274775 in words is "eighty-seven billion, four hundred seventy million, two hundred seventy-four thousand, seven hundred seventy-five".

Divisors: 1 5 13 23 25 65 115 299 325 575 1495 1601 7309 7475 8005 20813 36545 36823 40025 95017 104065 168107 182725 184115 475085 478699 520325 840535 920575 2185391 2375425 2393495 4202675 10926955 11701709 11967475 54634775 58508545 152122217 269139307 292542725 760611085 1345696535 3498810991 3803055425 6728482675 17494054955 87470274775