12729460 has 12 divisors (see below), whose sum is σ = 26731908. Its totient is φ = 5091776.

The previous prime is 12729439. The next prime is 12729491. The reversal of 12729460 is 6492721.

It can be written as a sum of positive squares in 2 ways, for example, as 3896676 + 8832784 = 1974^2 + 2972^2 .

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 3 ways as a sum of consecutive naturals, for example, 318217 + ... + 318256.

It is an arithmetic number, because the mean of its divisors is an integer number (2227659).

Almost surely, 2^12729460 is an apocalyptic number.

12729460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12729460 is an abundant number, since it is smaller than the sum of its proper divisors (14002448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12729460 is a wasteful number, since it uses less digits than its factorization.

12729460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636482 (or 636480 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 12729460 is about 3567.8368796793. The cubic root of 12729460 is about 233.4909184919.

The spelling of 12729460 in words is "twelve million, seven hundred twenty-nine thousand, four hundred sixty".