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12680790 = 2351922247
BaseRepresentation
bin110000010111…
…111001010110
3212212020202220
4300113321112
511221241130
61131443210
7212533143
oct60277126
925766686
1012680790
1171812a1
1242b6506
13281cb35
1419813ca
1511a7410
hexc17e56

12680790 has 32 divisors (see below), whose sum is σ = 32037120. Its totient is φ = 3203424.

The previous prime is 12680779. The next prime is 12680803. The reversal of 12680790 is 9708621.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10554 + ... + 11693.

It is an arithmetic number, because the mean of its divisors is an integer number (1001160).

Almost surely, 212680790 is an apocalyptic number.

12680790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12680790 is an abundant number, since it is smaller than the sum of its proper divisors (19356330).

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

12680790 is a wasteful number, since it uses less digits than its factorization.

12680790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22276.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 12680790 is about 3561.0096882766. The cubic root of 12680790 is about 233.1929609209.

The spelling of 12680790 in words is "twelve million, six hundred eighty thousand, seven hundred ninety".

Divisors: 1 2 3 5 6 10 15 19 30 38 57 95 114 190 285 570 22247 44494 66741 111235 133482 222470 333705 422693 667410 845386 1268079 2113465 2536158 4226930 6340395 12680790