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85306747 = 239738237
BaseRepresentation
bin1010001010110…
…10110101111011
312221112000212011
411011122311323
5133314303442
612244230351
72054044501
oct505326573
9187460764
1085306747
1144176249
122469b3b7
131489a986
14b488671
157751117
hex515ad7b

85306747 has 8 divisors (see below), whose sum is σ = 89935776. Its totient is φ = 80754432.

The previous prime is 85306717. The next prime is 85306757. The reversal of 85306747 is 74760358.

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

It is a cyclic number.

It is not a de Polignac number, because 85306747 - 27 = 85306619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85306717) 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, 16888 + ... + 21349.

It is an arithmetic number, because the mean of its divisors is an integer number (11241972).

Almost surely, 285306747 is an apocalyptic number.

85306747 is a deficient number, since it is larger than the sum of its proper divisors (4629029).

85306747 is a wasteful number, since it uses less digits than its factorization.

85306747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38357.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 85306747 is about 9236.1651674274. The cubic root of 85306747 is about 440.2112398230.

The spelling of 85306747 in words is "eighty-five million, three hundred six thousand, seven hundred forty-seven".

Divisors: 1 23 97 2231 38237 879451 3708989 85306747