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12955605 = 351329279
BaseRepresentation
bin110001011010…
…111111010101
3220101012202020
4301122333111
511304034410
61141403353
7215056305
oct61327725
926335666
1012955605
117349813
124409559
1328b7c50
141a13605
15120da70
hexc5afd5

12955605 has 48 divisors (see below), whose sum is σ = 23412480. Its totient is φ = 6080256.

The previous prime is 12955543. The next prime is 12955609. The reversal of 12955605 is 50655921.

It is not a de Polignac number, because 12955605 - 27 = 12955477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12955609) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 163956 + ... + 164034.

It is an arithmetic number, because the mean of its divisors is an integer number (487760).

Almost surely, 212955605 is an apocalyptic number.

12955605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12955605 is a deficient number, since it is larger than the sum of its proper divisors (10456875).

12955605 is a wasteful number, since it uses less digits than its factorization.

12955605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 33.

The square root of 12955605 is about 3599.3895315734. The cubic root of 12955605 is about 234.8655032408.

The spelling of 12955605 in words is "twelve million, nine hundred fifty-five thousand, six hundred five".

Divisors: 1 3 5 13 15 29 39 65 79 87 145 195 237 377 395 435 841 1027 1131 1185 1885 2291 2523 3081 4205 5135 5655 6873 10933 11455 12615 15405 29783 32799 34365 54665 66439 89349 148915 163995 199317 332195 446745 863707 996585 2591121 4318535 12955605