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12897076 = 2243167449
BaseRepresentation
bin110001001100…
…101100110100
3220021020110111
4301030230310
511300201301
61140232404
7214423543
oct61145464
926236414
1012897076
117309845
12439b704
13289740a
1419da15a
1511eb551
hexc4cb34

12897076 has 24 divisors (see below), whose sum is σ = 23284800. Its totient is φ = 6246912.

The previous prime is 12897037. The next prime is 12897077. The reversal of 12897076 is 67079821.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12897077) 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 7 ways as a sum of consecutive naturals, for example, 28500 + ... + 28948.

It is an arithmetic number, because the mean of its divisors is an integer number (970200).

Almost surely, 212897076 is an apocalyptic number.

12897076 is the 1796-th decagonal number.

It is an amenable number.

12897076 is a deficient number, since it is larger than the sum of its proper divisors (10387724).

12897076 is a wasteful number, since it uses less digits than its factorization.

12897076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663 (or 661 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 12897076 is about 3591.2499216846. The cubic root of 12897076 is about 234.5112885790.

The spelling of 12897076 in words is "twelve million, eight hundred ninety-seven thousand, seventy-six".

Divisors: 1 2 4 43 86 167 172 334 449 668 898 1796 7181 14362 19307 28724 38614 74983 77228 149966 299932 3224269 6448538 12897076