12732705 has 24 divisors (see below), whose sum is σ = 22305192. Its totient is φ = 6718464.

The previous prime is 12732703. The next prime is 12732721. The reversal of 12732705 is 50723721.

It can be written as a sum of positive squares in 4 ways, for example, as 4915089 + 7817616 = 2217^2 + 2796^2 .

It is not a de Polignac number, because 12732705 - 2¹ = 12732703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12732703) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2907 + ... + 5823.

It is an arithmetic number, because the mean of its divisors is an integer number (929383).

Almost surely, 2^12732705 is an apocalyptic number.

12732705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12732705 is a deficient number, since it is larger than the sum of its proper divisors (9572487).

12732705 is a wasteful number, since it uses less digits than its factorization.

12732705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3025 (or 3022 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 12732705 is about 3568.2916080388. The cubic root of 12732705 is about 233.5107573449.

The spelling of 12732705 in words is "twelve million, seven hundred thirty-two thousand, seven hundred five".