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12707210 = 2531179229
BaseRepresentation
bin110000011110…
…010110001010
3212220121000102
4300132112022
511223112320
61132205402
7213003155
oct60362612
925817012
1012707210
11719a12a
124309862
13282bb79
14198ac9c
1511b0175
hexc1e58a

12707210 has 32 divisors (see below), whose sum is σ = 23846400. Its totient is φ = 4870080.

The previous prime is 12707147. The next prime is 12707237. The reversal of 12707210 is 1270721.

It is a super-2 number, since 2×127072102 = 322946371968200, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55376 + ... + 55604.

It is an arithmetic number, because the mean of its divisors is an integer number (745200).

Almost surely, 212707210 is an apocalyptic number.

12707210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12707210 is a deficient number, since it is larger than the sum of its proper divisors (11139190).

12707210 is a wasteful number, since it uses less digits than its factorization.

12707210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446.

The product of its (nonzero) digits is 196, while the sum is 20.

The square root of 12707210 is about 3564.7173801018. The cubic root of 12707210 is about 233.3547984788.

Adding to 12707210 its reverse (1270721), we get a palindrome (13977931).

The spelling of 12707210 in words is "twelve million, seven hundred seven thousand, two hundred ten".

Divisors: 1 2 5 10 31 62 155 179 229 310 358 458 895 1145 1790 2290 5549 7099 11098 14198 27745 35495 40991 55490 70990 81982 204955 409910 1270721 2541442 6353605 12707210