12130278 has 16 divisors (see below), whose sum is σ = 24453120. Its totient is φ = 4011336.

The previous prime is 12130259. The next prime is 12130289. The reversal of 12130278 is 87203121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7198 + ... + 8721.

It is an arithmetic number, because the mean of its divisors is an integer number (1528320).

Almost surely, 2^12130278 is an apocalyptic number.

12130278 is an abundant number, since it is smaller than the sum of its proper divisors (12322842).

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

12130278 is a wasteful number, since it uses less digits than its factorization.

12130278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16051.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 12130278 is about 3482.8548634705. The cubic root of 12130278 is about 229.7683742507.

Adding to 12130278 its reverse (87203121), we get a palindrome (99333399).

The spelling of 12130278 in words is "twelve million, one hundred thirty thousand, two hundred seventy-eight".