12730146 has 64 divisors (see below), whose sum is σ = 30796416. Its totient is φ = 3456000.

The previous prime is 12730121. The next prime is 12730153. The reversal of 12730146 is 64103721.

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 31 ways as a sum of consecutive naturals, for example, 31546 + ... + 31946.

It is an arithmetic number, because the mean of its divisors is an integer number (481194).

Almost surely, 2^12730146 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12730146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15398208).

12730146 is an abundant number, since it is smaller than the sum of its proper divisors (18066270).

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

12730146 is a wasteful number, since it uses less digits than its factorization.

12730146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 12730146 is about 3567.9330150663. The cubic root of 12730146 is about 233.4951127492.

Adding to 12730146 its reverse (64103721), we get a palindrome (76833867).

The spelling of 12730146 in words is "twelve million, seven hundred thirty thousand, one hundred forty-six".