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212697041 = 9710920117
BaseRepresentation
bin11001010110101…
…11111111010001
3112211020010111012
430223113333101
5413422301131
633034500305
75161615664
oct1453277721
9484203435
10212697041
11aa075487
125b294695
13350b164b
14203696db
1513a1652b
hexcad7fd1

212697041 has 8 divisors (see below), whose sum is σ = 216872040. Its totient is φ = 208562688.

The previous prime is 212697007. The next prime is 212697059. The reversal of 212697041 is 140796212.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 20070400 + 192626641 = 4480^2 + 13879^2 .

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 212697041 - 218 = 212434897 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212696989 and 212697007.

It is not an unprimeable number, because it can be changed into a prime (212697341) 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, 515 + ... + 20631.

It is an arithmetic number, because the mean of its divisors is an integer number (27109005).

Almost surely, 2212697041 is an apocalyptic number.

It is an amenable number.

212697041 is a deficient number, since it is larger than the sum of its proper divisors (4174999).

212697041 is a wasteful number, since it uses less digits than its factorization.

212697041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20323.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 212697041 is about 14584.1366216859. The cubic root of 212697041 is about 596.9259822172.

The spelling of 212697041 in words is "two hundred twelve million, six hundred ninety-seven thousand, forty-one".

Divisors: 1 97 109 10573 20117 1951349 2192753 212697041