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207020671 = 11131579221
BaseRepresentation
bin11000101011011…
…10001001111111
3112102112201222021
430111232021333
5410444130141
632313101011
75062434544
oct1425561177
9472481867
10207020671
11a6948770
12593b7767
1333b74a50
141d6ccbcb
15132946d1
hexc56e27f

207020671 has 16 divisors (see below), whose sum is σ = 244788768. Its totient is φ = 172598400.

The previous prime is 207020669. The next prime is 207020689. The reversal of 207020671 is 176020702.

It is not a de Polignac number, because 207020671 - 21 = 207020669 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 (207020651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17841 + ... + 27061.

It is an arithmetic number, because the mean of its divisors is an integer number (15299298).

Almost surely, 2207020671 is an apocalyptic number.

207020671 is a deficient number, since it is larger than the sum of its proper divisors (37768097).

207020671 is a wasteful number, since it uses less digits than its factorization.

207020671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9402.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 207020671 is about 14388.2129189139. The cubic root of 207020671 is about 591.5678599624.

The spelling of 207020671 in words is "two hundred seven million, twenty thousand, six hundred seventy-one".

Divisors: 1 11 13 143 157 1727 2041 9221 22451 101431 119873 1318603 1447697 15924667 18820061 207020671