11271472 has 40 divisors (see below), whose sum is σ = 23078880. Its totient is φ = 5322240.

The previous prime is 11271467. The next prime is 11271473. The reversal of 11271472 is 27417211.

It is not an unprimeable number, because it can be changed into a prime (11271473) 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, 39972 + ... + 40252.

It is an arithmetic number, because the mean of its divisors is an integer number (576972).

Almost surely, 2^11271472 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 11271472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11539440).

11271472 is an abundant number, since it is smaller than the sum of its proper divisors (11807408).

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

11271472 is a wasteful number, since it uses less digits than its factorization.

11271472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421 (or 415 counting only the distinct ones).

The product of its digits is 784, while the sum is 25.

The square root of 11271472 is about 3357.3012971731. The cubic root of 11271472 is about 224.2127018740.

Adding to 11271472 its reverse (27417211), we get a palindrome (38688683).

It can be divided in two parts, 1127 and 1472, that multiplied together give a square (1658944 = 1288²).

The spelling of 11271472 in words is "eleven million, two hundred seventy-one thousand, four hundred seventy-two".