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206164147 = 729452021
BaseRepresentation
bin11000100100111…
…01000010110011
3112100221020001011
430102131002303
5410234223042
632242451351
75052236440
oct1422350263
9470836034
10206164147
11a64131a2
1259063b57
1333934c27
141d5489c7
1513175a17
hexc49d0b3

206164147 has 4 divisors (see below), whose sum is σ = 235616176. Its totient is φ = 176712120.

The previous prime is 206164141. The next prime is 206164163. The reversal of 206164147 is 741461602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 206164147 - 219 = 205639859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206164141) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 14726004 + ... + 14726017.

It is an arithmetic number, because the mean of its divisors is an integer number (58904044).

Almost surely, 2206164147 is an apocalyptic number.

206164147 is a deficient number, since it is larger than the sum of its proper divisors (29452029).

206164147 is an equidigital number, since it uses as much as digits as its factorization.

206164147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29452028.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 206164147 is about 14358.4172874311. The cubic root of 206164147 is about 590.7508844222.

The spelling of 206164147 in words is "two hundred six million, one hundred sixty-four thousand, one hundred forty-seven".

Divisors: 1 7 29452021 206164147