12905236 has 6 divisors (see below), whose sum is σ = 22584170. Its totient is φ = 6452616.

The previous prime is 12905219. The next prime is 12905251. The reversal of 12905236 is 63250921.

It can be written as a sum of positive squares in only one way, i.e., 12645136 + 260100 = 3556^2 + 510^2 .

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 1613151 + ... + 1613158.

Almost surely, 2^12905236 is an apocalyptic number.

It is an amenable number.

12905236 is a deficient number, since it is larger than the sum of its proper divisors (9678934).

12905236 is a wasteful number, since it uses less digits than its factorization.

12905236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3226313 (or 3226311 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 12905236 is about 3592.3858367386. The cubic root of 12905236 is about 234.5607367039.

The spelling of 12905236 in words is "twelve million, nine hundred five thousand, two hundred thirty-six".