12730576 has 10 divisors (see below), whose sum is σ = 24665522. Its totient is φ = 6365280.

The previous prime is 12730573. The next prime is 12730579. The reversal of 12730576 is 67503721.

It is an interprime number because it is at equal distance from previous prime (12730573) and next prime (12730579).

It can be written as a sum of positive squares in only one way, i.e., 7160976 + 5569600 = 2676^2 + 2360^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12730573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 397815 + ... + 397846.

Almost surely, 2^12730576 is an apocalyptic number.

12730576 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12730576 is a deficient number, since it is larger than the sum of its proper divisors (11934946).

12730576 is an equidigital number, since it uses as much as digits as its factorization.

12730576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795669 (or 795663 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 12730576 is about 3567.9932735363. The cubic root of 12730576 is about 233.4977417258.

It can be divided in two parts, 127 and 30576, that added together give a palindrome (30703).

The spelling of 12730576 in words is "twelve million, seven hundred thirty thousand, five hundred seventy-six".