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12948705 = 32571137101
BaseRepresentation
bin110001011001…
…010011100001
3220100212021200
4301121103201
511303324310
61141311413
7215030220
oct61312341
926325250
1012948705
117344610
124405569
1328b4a73
141a10cb7
15120b9c0
hexc594e1

12948705 has 96 divisors (see below), whose sum is σ = 29023488. Its totient is φ = 5184000.

The previous prime is 12948673. The next prime is 12948707. The reversal of 12948705 is 50784921.

It is not a de Polignac number, because 12948705 - 25 = 12948673 is a prime.

It is a super-2 number, since 2×129487052 = 335337922354050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12948705.

It is not an unprimeable number, because it can be changed into a prime (12948707) 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 in 95 ways as a sum of consecutive naturals, for example, 128155 + ... + 128255.

It is an arithmetic number, because the mean of its divisors is an integer number (302328).

Almost surely, 212948705 is an apocalyptic number.

12948705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12948705 is an abundant number, since it is smaller than the sum of its proper divisors (16074783).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12948705 is a wasteful number, since it uses less digits than its factorization.

12948705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167 (or 164 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 12948705 is about 3598.4309080487. The cubic root of 12948705 is about 234.8238003188.

It can be divided in two parts, 1294 and 8705, that added together give a palindrome (9999).

The spelling of 12948705 in words is "twelve million, nine hundred forty-eight thousand, seven hundred five".

Divisors: 1 3 5 7 9 11 15 21 33 35 37 45 55 63 77 99 101 105 111 165 185 231 259 303 315 333 385 407 495 505 555 693 707 777 909 1111 1155 1221 1295 1515 1665 2035 2121 2331 2849 3333 3465 3535 3663 3737 3885 4545 5555 6105 6363 7777 8547 9999 10605 11211 11655 14245 16665 18315 18685 23331 25641 26159 31815 33633 38885 41107 42735 49995 56055 69993 78477 116655 123321 128205 130795 168165 205535 235431 287749 349965 369963 392385 616605 863247 1177155 1438745 1849815 2589741 4316235 12948705