12638810 has 16 divisors (see below), whose sum is σ = 22809600. Its totient is φ = 5042256.

The previous prime is 12638807. The next prime is 12638827. The reversal of 12638810 is 1883621.

It is a super-2 number, since 2×12638810² = 319479036432200, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 2951 + ... + 5829.

It is an arithmetic number, because the mean of its divisors is an integer number (1425600).

Almost surely, 2^12638810 is an apocalyptic number.

12638810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12638810 is a deficient number, since it is larger than the sum of its proper divisors (10170790).

12638810 is a wasteful number, since it uses less digits than its factorization.

12638810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3325.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 12638810 is about 3555.1104061618. The cubic root of 12638810 is about 232.9353464999.

The spelling of 12638810 in words is "twelve million, six hundred thirty-eight thousand, eight hundred ten".