11271072 has 48 divisors (see below), whose sum is σ = 29877120. Its totient is φ = 3720192.

The previous prime is 11271061. The next prime is 11271077. The reversal of 11271072 is 27017211.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (11271077) 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, 10329 + ... + 11367.

It is an arithmetic number, because the mean of its divisors is an integer number (622440).

Almost surely, 2^11271072 is an apocalyptic number.

11271072 is a gapful number since it is divisible by the number (12) 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 11271072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14938560).

11271072 is an abundant number, since it is smaller than the sum of its proper divisors (18606048).

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

11271072 is a wasteful number, since it uses less digits than its factorization.

11271072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1165 (or 1157 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 21.

The square root of 11271072 is about 3357.2417249879. The cubic root of 11271072 is about 224.2100495691.

Adding to 11271072 its reverse (27017211), we get a palindrome (38288283).

The spelling of 11271072 in words is "eleven million, two hundred seventy-one thousand, seventy-two".