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85127905 = 5292512339
BaseRepresentation
bin1010001001011…
…11001011100001
312221011221112101
411010233023201
5133243043110
612240330401
72052401212
oct504571341
9187157471
1085127905
1144063945
1224613a01
1314837455
14b43d409
15771813a
hex512f2e1

85127905 has 16 divisors (see below), whose sum is σ = 106142400. Its totient is φ = 65464000.

The previous prime is 85127897. The next prime is 85127921. The reversal of 85127905 is 50972158.

It is not a de Polignac number, because 85127905 - 23 = 85127897 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 35226 + ... + 37564.

It is an arithmetic number, because the mean of its divisors is an integer number (6633900).

Almost surely, 285127905 is an apocalyptic number.

It is an amenable number.

85127905 is a deficient number, since it is larger than the sum of its proper divisors (21014495).

85127905 is a wasteful number, since it uses less digits than its factorization.

85127905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2624.

The product of its (nonzero) digits is 25200, while the sum is 37.

The square root of 85127905 is about 9226.4784723100. The cubic root of 85127905 is about 439.9033964916.

The spelling of 85127905 in words is "eighty-five million, one hundred twenty-seven thousand, nine hundred five".

Divisors: 1 5 29 145 251 1255 2339 7279 11695 36395 67831 339155 587089 2935445 17025581 85127905