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12680276 = 2271313457
BaseRepresentation
bin110000010111…
…110001010100
3212212020001212
4300113301110
511221232101
61131440552
7212531510
oct60276124
925766055
1012680276
117180974
1242b6158
13281c82b
141981140
1511a71bb
hexc17c54

12680276 has 24 divisors (see below), whose sum is σ = 25561536. Its totient is φ = 5391360.

The previous prime is 12680273. The next prime is 12680281. The reversal of 12680276 is 67208621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12680273) 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, 1940 + ... + 5396.

It is an arithmetic number, because the mean of its divisors is an integer number (1065064).

Almost surely, 212680276 is an apocalyptic number.

It is an amenable number.

12680276 is an abundant number, since it is smaller than the sum of its proper divisors (12881260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12680276 is a wasteful number, since it uses less digits than its factorization.

12680276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3599 (or 3597 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 12680276 is about 3560.9375170031. The cubic root of 12680276 is about 233.1898101498.

Adding to 12680276 its reverse (67208621), we get a palindrome (79888897).

The spelling of 12680276 in words is "twelve million, six hundred eighty thousand, two hundred seventy-six".

Divisors: 1 2 4 7 14 28 131 262 524 917 1834 3457 3668 6914 13828 24199 48398 96796 452867 905734 1811468 3170069 6340138 12680276