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12905708 = 223798513
BaseRepresentation
bin110001001110…
…110011101100
3220021200022012
4301032303230
511300440313
61140340352
7214460654
oct61166354
926250265
1012905708
117315282
1243a46b8
13289b31a
1419dd364
1511edda8
hexc4ecec

12905708 has 12 divisors (see below), whose sum is σ = 22647240. Its totient is φ = 6435072.

The previous prime is 12905701. The next prime is 12905713. The reversal of 12905708 is 80750921.

It is not an unprimeable number, because it can be changed into a prime (12905701) 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 in 3 ways as a sum of consecutive naturals, for example, 2741 + ... + 5772.

It is an arithmetic number, because the mean of its divisors is an integer number (1887270).

Almost surely, 212905708 is an apocalyptic number.

It is an amenable number.

12905708 is a deficient number, since it is larger than the sum of its proper divisors (9741532).

12905708 is a wasteful number, since it uses less digits than its factorization.

12905708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8896 (or 8894 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 12905708 is about 3592.4515306403. The cubic root of 12905708 is about 234.5635963008.

Adding to 12905708 its sum of digits (32), we get a triangular number (12905740 = T5080).

The spelling of 12905708 in words is "twelve million, nine hundred five thousand, seven hundred eight".

Divisors: 1 2 4 379 758 1516 8513 17026 34052 3226427 6452854 12905708