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196272209 = 728038887
BaseRepresentation
bin10111011001011…
…10000001010001
3111200022122212002
423230232001101
5400221202314
631250443345
74602200120
oct1354560121
9450278762
10196272209
11a0877241
1255893555
1331880603
141c0d1ab7
151236eade
hexbb2e051

196272209 has 4 divisors (see below), whose sum is σ = 224311104. Its totient is φ = 168233316.

The previous prime is 196272151. The next prime is 196272221. The reversal of 196272209 is 902272691.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 196272209 - 212 = 196268113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196272239) 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, 14019437 + ... + 14019450.

It is an arithmetic number, because the mean of its divisors is an integer number (56077776).

Almost surely, 2196272209 is an apocalyptic number.

It is an amenable number.

196272209 is a deficient number, since it is larger than the sum of its proper divisors (28038895).

196272209 is an equidigital number, since it uses as much as digits as its factorization.

196272209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28038894.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 196272209 is about 14009.7183768982. The cubic root of 196272209 is about 581.1473611653.

The spelling of 196272209 in words is "one hundred ninety-six million, two hundred seventy-two thousand, two hundred nine".

Divisors: 1 7 28038887 196272209