11272443 has 32 divisors (see below), whose sum is σ = 18686976. Its totient is φ = 5885568.

The previous prime is 11272421. The next prime is 11272447. The reversal of 11272443 is 34427211.

It is a happy number.

It is not a de Polignac number, because 11272443 - 2⁶ = 11272379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11272447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42730 + ... + 42992.

It is an arithmetic number, because the mean of its divisors is an integer number (583968).

Almost surely, 2^11272443 is an apocalyptic number.

11272443 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11272443 is a deficient number, since it is larger than the sum of its proper divisors (7414533).

11272443 is a wasteful number, since it uses less digits than its factorization.

11272443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443.

The product of its digits is 1344, while the sum is 24.

The square root of 11272443 is about 3357.4459042552. The cubic root of 11272443 is about 224.2191400832.

Adding to 11272443 its reverse (34427211), we get a palindrome (45699654).

It can be divided in two parts, 1127 and 2443, that added together give a triangular number (3570 = T₈₄).

The spelling of 11272443 in words is "eleven million, two hundred seventy-two thousand, four hundred forty-three".