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212434297 = 1274313881
BaseRepresentation
bin11001010100101…
…11110101111001
3112210201210001221
430222113311321
5413340344142
633025112041
75156442655
oct1452276571
9483653057
10212434297
11a9a06039
125b188621
133501bb8a
14202dba65
15139b3767
hexca97d79

212434297 has 8 divisors (see below), whose sum is σ = 214659072. Its totient is φ = 210218400.

The previous prime is 212434283. The next prime is 212434331. The reversal of 212434297 is 792434212.

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 212434297 - 27 = 212434169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212434207) 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 7 ways as a sum of consecutive naturals, for example, 52797 + ... + 56677.

It is an arithmetic number, because the mean of its divisors is an integer number (26832384).

Almost surely, 2212434297 is an apocalyptic number.

It is an amenable number.

212434297 is a deficient number, since it is larger than the sum of its proper divisors (2224775).

212434297 is a wasteful number, since it uses less digits than its factorization.

212434297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4439.

The product of its digits is 24192, while the sum is 34.

The square root of 212434297 is about 14575.1259685809. The cubic root of 212434297 is about 596.6800873289.

The spelling of 212434297 in words is "two hundred twelve million, four hundred thirty-four thousand, two hundred ninety-seven".

Divisors: 1 127 431 3881 54737 492887 1672711 212434297