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12880927 is a prime number
BaseRepresentation
bin110001001000…
…110000011111
3220020102022101
4301020300133
511244142202
61140025531
7214325503
oct61106037
926212271
1012880927
1172a86a4
1243922a7
13288cc67
1419d4303
1511e6887
hexc48c1f

12880927 has 2 divisors, whose sum is σ = 12880928. Its totient is φ = 12880926.

The previous prime is 12880919. The next prime is 12880949. The reversal of 12880927 is 72908821.

It is a weak prime.

It is an emirp because it is prime and its reverse (72908821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12880927 - 23 = 12880919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12880997) 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 as a sum of consecutive naturals, namely, 6440463 + 6440464.

It is an arithmetic number, because the mean of its divisors is an integer number (6440464).

Almost surely, 212880927 is an apocalyptic number.

12880927 is a deficient number, since it is larger than the sum of its proper divisors (1).

12880927 is an equidigital number, since it uses as much as digits as its factorization.

12880927 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 12880927 is about 3589.0008358873. Note that the first 3 decimals coincide. The cubic root of 12880927 is about 234.4133670405.

The spelling of 12880927 in words is "twelve million, eight hundred eighty thousand, nine hundred twenty-seven".