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12707199 = 3617431
BaseRepresentation
bin110000011110…
…010101111111
3212220121000000
4300132111333
511223112244
61132205343
7213003141
oct60362577
925817000
1012707199
11719a11a
124309853
13282bb6b
14198ac91
1511b0169
hexc1e57f

12707199 has 14 divisors (see below), whose sum is σ = 19053176. Its totient is φ = 8470980.

The previous prime is 12707147. The next prime is 12707237. The reversal of 12707199 is 99170721.

It is not a de Polignac number, because 12707199 - 216 = 12641663 is a prime.

It is a super-2 number, since 2×127071992 = 322945812851202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12707119) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 7987 + ... + 9444.

Almost surely, 212707199 is an apocalyptic number.

12707199 is a deficient number, since it is larger than the sum of its proper divisors (6345977).

12707199 is an frugal number, since it uses more digits than its factorization.

12707199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17449 (or 17434 counting only the distinct ones).

The product of its (nonzero) digits is 7938, while the sum is 36.

The square root of 12707199 is about 3564.7158372022. The cubic root of 12707199 is about 233.3547311442.

The spelling of 12707199 in words is "twelve million, seven hundred seven thousand, one hundred ninety-nine".

Divisors: 1 3 9 27 81 243 729 17431 52293 156879 470637 1411911 4235733 12707199