12538336 has 12 divisors (see below), whose sum is σ = 24684912. Its totient is φ = 6269152.

The previous prime is 12538321. The next prime is 12538343. The reversal of 12538336 is 63383521.

It is a junction number, because it is equal to n+sod(n) for n = 12538298 and 12538307.

It is a congruent number.

It is an unprimeable number.

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, 195880 + ... + 195943.

It is an arithmetic number, because the mean of its divisors is an integer number (2057076).

Almost surely, 2^12538336 is an apocalyptic number.

12538336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12538336 is a deficient number, since it is larger than the sum of its proper divisors (12146576).

12538336 is an equidigital number, since it uses as much as digits as its factorization.

12538336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391833 (or 391825 counting only the distinct ones).

The product of its digits is 12960, while the sum is 31.

The square root of 12538336 is about 3540.9512846127. The cubic root of 12538336 is about 232.3164528166.

The spelling of 12538336 in words is "twelve million, five hundred thirty-eight thousand, three hundred thirty-six".