12730278 has 16 divisors (see below), whose sum is σ = 27775296. Its totient is φ = 3857640.

The previous prime is 12730169. The next prime is 12730283. The reversal of 12730278 is 87203721.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96376 + ... + 96507.

It is an arithmetic number, because the mean of its divisors is an integer number (1735956).

Almost surely, 2^12730278 is an apocalyptic number.

12730278 is an abundant number, since it is smaller than the sum of its proper divisors (15045018).

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

12730278 is a wasteful number, since it uses less digits than its factorization.

12730278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192899.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 12730278 is about 3567.9515131235. The cubic root of 12730278 is about 233.4959197902.

Adding to 12730278 its reverse (87203721), we get a palindrome (99933999).

The spelling of 12730278 in words is "twelve million, seven hundred thirty thousand, two hundred seventy-eight".