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12857060 = 225642853
BaseRepresentation
bin110001000010…
…111011100100
3220012012120102
4301002323210
511242411220
61135323232
7214166066
oct61027344
926165512
1012857060
117291777
124380518
132882138
1419c9736
1511de775
hexc42ee4

12857060 has 12 divisors (see below), whose sum is σ = 26999868. Its totient is φ = 5142816.

The previous prime is 12857057. The next prime is 12857071. The reversal of 12857060 is 6075821.

It can be written as a sum of positive squares in 2 ways, for example, as 7695076 + 5161984 = 2774^2 + 2272^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 321407 + ... + 321446.

It is an arithmetic number, because the mean of its divisors is an integer number (2249989).

Almost surely, 212857060 is an apocalyptic number.

12857060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12857060 is an abundant number, since it is smaller than the sum of its proper divisors (14142808).

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

12857060 is a wasteful number, since it uses less digits than its factorization.

12857060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642862 (or 642860 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 12857060 is about 3585.6742741080. The cubic root of 12857060 is about 234.2684964401.

The spelling of 12857060 in words is "twelve million, eight hundred fifty-seven thousand, sixty".

Divisors: 1 2 4 5 10 20 642853 1285706 2571412 3214265 6428530 12857060