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12830957 is a prime number
BaseRepresentation
bin110000111100…
…100011101101
3220010212202122
4300330203231
511241042312
61135002325
7214030016
oct60744355
926125678
1012830957
1172740a7
1243693a5
1328732a9
1419c000d
1511d6b72
hexc3c8ed

12830957 has 2 divisors, whose sum is σ = 12830958. Its totient is φ = 12830956.

The previous prime is 12830933. The next prime is 12830959. The reversal of 12830957 is 75903821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12823561 + 7396 = 3581^2 + 86^2 .

It is a cyclic number.

It is not a de Polignac number, because 12830957 - 210 = 12829933 is a prime.

Together with 12830959, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12830959) by changing a digit.

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 as a sum of consecutive naturals, namely, 6415478 + 6415479.

It is an arithmetic number, because the mean of its divisors is an integer number (6415479).

Almost surely, 212830957 is an apocalyptic number.

It is an amenable number.

12830957 is a deficient number, since it is larger than the sum of its proper divisors (1).

12830957 is an equidigital number, since it uses as much as digits as its factorization.

12830957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 12830957 is about 3582.0325235821. The cubic root of 12830957 is about 234.1098481014.

The spelling of 12830957 in words is "twelve million, eight hundred thirty thousand, nine hundred fifty-seven".