12078272 has 28 divisors (see below), whose sum is σ = 24557736. Its totient is φ = 5890560.

The previous prime is 12078271. The next prime is 12078277. The reversal of 12078272 is 27287021.

It is not an unprimeable number, because it can be changed into a prime (12078271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323 + ... + 4925.

It is an arithmetic number, because the mean of its divisors is an integer number (877062).

Almost surely, 2^12078272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12078272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12278868).

12078272 is an abundant number, since it is smaller than the sum of its proper divisors (12479464).

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

12078272 is an equidigital number, since it uses as much as digits as its factorization.

12078272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4656 (or 4646 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 12078272 is about 3475.3808424401. The cubic root of 12078272 is about 229.4395427761.

The spelling of 12078272 in words is "twelve million, seventy-eight thousand, two hundred seventy-two".