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212432207 = 1337441647
BaseRepresentation
bin11001010100101…
…11010101001111
3112210201200012112
430222113111033
5413340312312
633025054235
75156433611
oct1452272517
9483650175
10212432207
11a9a04509
125b18737b
133501ac40
14202dadb1
15139b2d22
hexca9754f

212432207 has 8 divisors (see below), whose sum is σ = 234956736. Its totient is φ = 190791072.

The previous prime is 212432197. The next prime is 212432237. The reversal of 212432207 is 702234212.

It is a happy number.

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 212432207 - 214 = 212415823 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 (212432237) 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, 220343 + ... + 221304.

It is an arithmetic number, because the mean of its divisors is an integer number (29369592).

Almost surely, 2212432207 is an apocalyptic number.

212432207 is a deficient number, since it is larger than the sum of its proper divisors (22524529).

212432207 is a wasteful number, since it uses less digits than its factorization.

212432207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441697.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 212432207 is about 14575.0542709110. The cubic root of 212432207 is about 596.6781305428.

Adding to 212432207 its reverse (702234212), we get a palindrome (914666419).

The spelling of 212432207 in words is "two hundred twelve million, four hundred thirty-two thousand, two hundred seven".

Divisors: 1 13 37 481 441647 5741411 16340939 212432207