12272256 has 128 divisors (see below), whose sum is σ = 37454400. Its totient is φ = 3953664.

The previous prime is 12272237. The next prime is 12272257. The reversal of 12272256 is 65227221.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12272257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183135 + ... + 183201.

Almost surely, 2^12272256 is an apocalyptic number.

12272256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12272256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18727200).

12272256 is an abundant number, since it is smaller than the sum of its proper divisors (25182144).

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

12272256 is an equidigital number, since it uses as much as digits as its factorization.

12272256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 125 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 12272256 is about 3503.1779857723. The cubic root of 12272256 is about 230.6613354079.

Adding to 12272256 its reverse (65227221), we get a palindrome (77499477).

The spelling of 12272256 in words is "twelve million, two hundred seventy-two thousand, two hundred fifty-six".