11271144 has 16 divisors (see below), whose sum is σ = 28177920. Its totient is φ = 3757040.

The previous prime is 11271137. The next prime is 11271157. The reversal of 11271144 is 44117211.

It is a self number, because there is not a number n which added to its sum of digits gives 11271144.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234792 + ... + 234839.

It is an arithmetic number, because the mean of its divisors is an integer number (1761120).

Almost surely, 2^11271144 is an apocalyptic number.

It is an amenable number.

11271144 is an abundant number, since it is smaller than the sum of its proper divisors (16906776).

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

11271144 is a wasteful number, since it uses less digits than its factorization.

11271144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469640 (or 469636 counting only the distinct ones).

The product of its digits is 224, while the sum is 21.

The square root of 11271144 is about 3357.2524480593. The cubic root of 11271144 is about 224.2105269886.

Adding to 11271144 its reverse (44117211), we get a palindrome (55388355).

The spelling of 11271144 in words is "eleven million, two hundred seventy-one thousand, one hundred forty-four".