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12710145 = 3571923277
BaseRepresentation
bin110000011111…
…000100000001
3212220202001010
4300133010001
511223211040
61132231133
7213014550
oct60370401
925822033
1012710145
1171a1358
12430b4a9
1328302c6
14198bd97
1511b0e80
hexc1f101

12710145 has 64 divisors (see below), whose sum is σ = 25620480. Its totient is φ = 5246208.

The previous prime is 12710119. The next prime is 12710153. The reversal of 12710145 is 54101721.

It is a happy number.

It is not a de Polignac number, because 12710145 - 26 = 12710081 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 45747 + ... + 46023.

It is an arithmetic number, because the mean of its divisors is an integer number (400320).

Almost surely, 212710145 is an apocalyptic number.

12710145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12710145 is an abundant number, since it is smaller than the sum of its proper divisors (12910335).

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

12710145 is a wasteful number, since it uses less digits than its factorization.

12710145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 12710145 is about 3565.1290299230. The cubic root of 12710145 is about 233.3727631778.

Adding to 12710145 its reverse (54101721), we get a palindrome (66811866).

The spelling of 12710145 in words is "twelve million, seven hundred ten thousand, one hundred forty-five".

Divisors: 1 3 5 7 15 19 21 23 35 57 69 95 105 115 133 161 277 285 345 399 437 483 665 805 831 1311 1385 1939 1995 2185 2415 3059 4155 5263 5817 6371 6555 9177 9695 15295 15789 19113 26315 29085 31855 36841 44597 45885 78945 95565 110523 121049 133791 184205 222985 363147 552615 605245 668955 847343 1815735 2542029 4236715 12710145