12938505 has 8 divisors (see below), whose sum is σ = 20701632. Its totient is φ = 6900528.

The previous prime is 12938503. The next prime is 12938507. The reversal of 12938505 is 50583921.

It is an interprime number because it is at equal distance from previous prime (12938503) and next prime (12938507).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12938505 - 2¹ = 12938503 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12938503) by changing a digit.

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, 431269 + ... + 431298.

It is an arithmetic number, because the mean of its divisors is an integer number (2587704).

Almost surely, 2^12938505 is an apocalyptic number.

12938505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12938505 is a deficient number, since it is larger than the sum of its proper divisors (7763127).

12938505 is an equidigital number, since it uses as much as digits as its factorization.

12938505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862575.

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 12938505 is about 3597.0133444290. The cubic root of 12938505 is about 234.7621253750.

The spelling of 12938505 in words is "twelve million, nine hundred thirty-eight thousand, five hundred five".