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12851285 = 573137257
BaseRepresentation
bin110001000001…
…100001010101
3220011220122112
4301001201111
511242220120
61135240405
7214143206
oct61014125
926156575
1012851285
1172883a7
124379105
13287c615
1419c75ad
1511dcbc5
hexc41855

12851285 has 16 divisors (see below), whose sum is σ = 15808176. Its totient is φ = 10027008.

The previous prime is 12851261. The next prime is 12851309. The reversal of 12851285 is 58215821.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12851261) and next prime (12851309).

It can be written as a sum of positive squares in 8 ways, for example, as 1406596 + 11444689 = 1186^2 + 3383^2 .

It is a cyclic number.

It is not a de Polignac number, because 12851285 - 28 = 12851029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49877 + ... + 50133.

It is an arithmetic number, because the mean of its divisors is an integer number (988011).

Almost surely, 212851285 is an apocalyptic number.

It is an amenable number.

12851285 is a deficient number, since it is larger than the sum of its proper divisors (2956891).

12851285 is a wasteful number, since it uses less digits than its factorization.

12851285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472.

The product of its digits is 6400, while the sum is 32.

The square root of 12851285 is about 3584.8688957896. The cubic root of 12851285 is about 234.2334157613.

The spelling of 12851285 in words is "twelve million, eight hundred fifty-one thousand, two hundred eighty-five".

Divisors: 1 5 73 137 257 365 685 1285 10001 18761 35209 50005 93805 176045 2570257 12851285