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86075405 = 51310211297
BaseRepresentation
bin1010010000101…
…10100000001101
312222222002020222
411020112200031
5134013403110
612312521125
72063425463
oct510264015
9188862228
1086075405
11446507a9
12249b01a5
1314aa97c0
14b608833
157853c55
hex521680d

86075405 has 16 divisors (see below), whose sum is σ = 111430704. Its totient is φ = 63452160.

The previous prime is 86075387. The next prime is 86075411. The reversal of 86075405 is 50457068.

It can be written as a sum of positive squares in 8 ways, for example, as 1674436 + 84400969 = 1294^2 + 9187^2 .

It is not a de Polignac number, because 86075405 - 210 = 86074381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65717 + ... + 67013.

It is an arithmetic number, because the mean of its divisors is an integer number (6964419).

Almost surely, 286075405 is an apocalyptic number.

It is an amenable number.

86075405 is a deficient number, since it is larger than the sum of its proper divisors (25355299).

86075405 is a wasteful number, since it uses less digits than its factorization.

86075405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2336.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 86075405 is about 9277.6831698436. The cubic root of 86075405 is about 441.5294655519.

The spelling of 86075405 in words is "eighty-six million, seventy-five thousand, four hundred five".

Divisors: 1 5 13 65 1021 1297 5105 6485 13273 16861 66365 84305 1324237 6621185 17215081 86075405