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85392487 = 531799001
BaseRepresentation
bin1010001011011…
…11110001100111
312221200101110201
411011233301213
5133330024422
612250131331
72054552455
oct505576147
9187611421
1085392487
1144224704
1224720b47
13148ca9cb
14b4ab9d5
15776b727
hex516fc67

85392487 has 8 divisors (see below), whose sum is σ = 87499440. Its totient is φ = 83304000.

The previous prime is 85392473. The next prime is 85392493. The reversal of 85392487 is 78429358.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-85392487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85392427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4987 + ... + 13987.

It is an arithmetic number, because the mean of its divisors is an integer number (10937430).

Almost surely, 285392487 is an apocalyptic number.

85392487 is a deficient number, since it is larger than the sum of its proper divisors (2106953).

85392487 is a wasteful number, since it uses less digits than its factorization.

85392487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9233.

The product of its digits is 483840, while the sum is 46.

The square root of 85392487 is about 9240.8055384799. The cubic root of 85392487 is about 440.3586727633.

It can be divided in two parts, 8539 and 2487, that added together give a triangular number (11026 = T148).

The spelling of 85392487 in words is "eighty-five million, three hundred ninety-two thousand, four hundred eighty-seven".

Divisors: 1 53 179 9001 9487 477053 1611179 85392487