12272448 has 56 divisors (see below), whose sum is σ = 33284160. Its totient is φ = 3988480.

The previous prime is 12272441. The next prime is 12272483. The reversal of 12272448 is 84427221.

It is a super-2 number, since 2×12272448² = 301225959825408, which contains 22 as substring.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12272441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7093 + ... + 8651.

It is an arithmetic number, because the mean of its divisors is an integer number (594360).

Almost surely, 2^12272448 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 12272448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16642080).

12272448 is an abundant number, since it is smaller than the sum of its proper divisors (21011712).

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

12272448 is a wasteful number, since it uses less digits than its factorization.

12272448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1615 (or 1605 counting only the distinct ones).

The product of its digits is 7168, while the sum is 30.

The square root of 12272448 is about 3503.2053893542. The cubic root of 12272448 is about 230.6625383040.

Adding to 12272448 its reverse (84427221), we get a palindrome (96699669).

It can be divided in two parts, 12272 and 448, that added together give a triangular number (12720 = T₁₅₉).

The spelling of 12272448 in words is "twelve million, two hundred seventy-two thousand, four hundred forty-eight".