12851224 has 8 divisors (see below), whose sum is σ = 24096060. Its totient is φ = 6425608.

The previous prime is 12851219. The next prime is 12851233. The reversal of 12851224 is 42215821.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 803194 + ... + 803209.

Almost surely, 2^12851224 is an apocalyptic number.

It is an amenable number.

12851224 is a deficient number, since it is larger than the sum of its proper divisors (11244836).

12851224 is a wasteful number, since it uses less digits than its factorization.

12851224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1606409 (or 1606405 counting only the distinct ones).

The product of its digits is 1280, while the sum is 25.

The square root of 12851224 is about 3584.8603877975. The cubic root of 12851224 is about 234.2330451560.

The spelling of 12851224 in words is "twelve million, eight hundred fifty-one thousand, two hundred twenty-four".