12638750 has 20 divisors (see below), whose sum is σ = 23692416. Its totient is φ = 5055000.

The previous prime is 12638741. The next prime is 12638761. The reversal of 12638750 is 5783621.

It is a happy number.

It is a Curzon number.

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 in 9 ways as a sum of consecutive naturals, for example, 3806 + ... + 6305.

Almost surely, 2^12638750 is an apocalyptic number.

12638750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12638750 is a deficient number, since it is larger than the sum of its proper divisors (11053666).

12638750 is an equidigital number, since it uses as much as digits as its factorization.

12638750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10133 (or 10118 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 12638750 is about 3555.1019675953. The cubic root of 12638750 is about 232.9349778960.

The spelling of 12638750 in words is "twelve million, six hundred thirty-eight thousand, seven hundred fifty".