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12910648 = 231613831
BaseRepresentation
bin110001010000…
…000000111000
3220021221002011
4301100000320
511301120043
61140415304
7214511242
oct61200070
926257064
1012910648
117318a63
1243a7534
1328a064a
141a01092
15120059d
hexc50038

12910648 has 8 divisors (see below), whose sum is σ = 24207480. Its totient is φ = 6455320.

The previous prime is 12910643. The next prime is 12910657. The reversal of 12910648 is 84601921.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12910643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 806908 + ... + 806923.

It is an arithmetic number, because the mean of its divisors is an integer number (3025935).

Almost surely, 212910648 is an apocalyptic number.

It is an amenable number.

12910648 is a deficient number, since it is larger than the sum of its proper divisors (11296832).

12910648 is a wasteful number, since it uses less digits than its factorization.

12910648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1613837 (or 1613833 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 12910648 is about 3593.1390176279. The cubic root of 12910648 is about 234.5935209499.

The spelling of 12910648 in words is "twelve million, nine hundred ten thousand, six hundred forty-eight".

Divisors: 1 2 4 8 1613831 3227662 6455324 12910648