12851536 has 20 divisors (see below), whose sum is σ = 25131700. Its totient is φ = 6365952.

The previous prime is 12851533. The next prime is 12851537. The reversal of 12851536 is 63515821.

It can be written as a sum of positive squares in 2 ways, for example, as 10601536 + 2250000 = 3256^2 + 1500^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12851498 and 12851507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12851533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1941 + ... + 5428.

It is an arithmetic number, because the mean of its divisors is an integer number (1256585).

Almost surely, 2^12851536 is an apocalyptic number.

12851536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12851536 is a deficient number, since it is larger than the sum of its proper divisors (12280164).

12851536 is a wasteful number, since it uses less digits than its factorization.

12851536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7486 (or 7480 counting only the distinct ones).

The product of its digits is 7200, while the sum is 31.

The square root of 12851536 is about 3584.9039038725. The cubic root of 12851536 is about 234.2349406984.

The spelling of 12851536 in words is "twelve million, eight hundred fifty-one thousand, five hundred thirty-six".