12549136 has 10 divisors (see below), whose sum is σ = 24313982. Its totient is φ = 6274560.

The previous prime is 12549133. The next prime is 12549137. The reversal of 12549136 is 63194521.

It can be written as a sum of positive squares in only one way, i.e., 7952400 + 4596736 = 2820^2 + 2144^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12549098 and 12549107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12549133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 392145 + ... + 392176.

Almost surely, 2^12549136 is an apocalyptic number.

12549136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12549136 is a deficient number, since it is larger than the sum of its proper divisors (11764846).

12549136 is an equidigital number, since it uses as much as digits as its factorization.

12549136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784329 (or 784323 counting only the distinct ones).

The product of its digits is 6480, while the sum is 31.

The square root of 12549136 is about 3542.4759702784. The cubic root of 12549136 is about 232.3831362438.

The spelling of 12549136 in words is "twelve million, five hundred forty-nine thousand, one hundred thirty-six".