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12897038 = 2711831009
BaseRepresentation
bin110001001100…
…101100001110
3220021020102002
4301030230032
511300201123
61140232302
7214423460
oct61145416
926236362
1012897038
117309810
12439b692
1328973ab
1419da130
1511eb528
hexc4cb0e

12897038 has 32 divisors (see below), whose sum is σ = 24433920. Its totient is φ = 4959360.

The previous prime is 12897037. The next prime is 12897077. The reversal of 12897038 is 83079821.

It is a junction number, because it is equal to n+sod(n) for n = 12896992 and 12897010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12897037) by changing a digit.

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, 12278 + ... + 13286.

It is an arithmetic number, because the mean of its divisors is an integer number (763560).

Almost surely, 212897038 is an apocalyptic number.

12897038 is a deficient number, since it is larger than the sum of its proper divisors (11536882).

12897038 is a wasteful number, since it uses less digits than its factorization.

12897038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 12897038 is about 3591.2446310437. The cubic root of 12897038 is about 234.5110582571.

The spelling of 12897038 in words is "twelve million, eight hundred ninety-seven thousand, thirty-eight".

Divisors: 1 2 7 11 14 22 77 83 154 166 581 913 1009 1162 1826 2018 6391 7063 11099 12782 14126 22198 77693 83747 155386 167494 586229 921217 1172458 1842434 6448519 12897038