11721272 has 16 divisors (see below), whose sum is σ = 22338600. Its totient is φ = 5764320.

The previous prime is 11721263. The next prime is 11721287. The reversal of 11721272 is 27212711.

11721272 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 11522 + ... + 12497.

Almost surely, 2^11721272 is an apocalyptic number.

It is an amenable number.

11721272 is a deficient number, since it is larger than the sum of its proper divisors (10617328).

11721272 is a wasteful number, since it uses less digits than its factorization.

11721272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24086 (or 24082 counting only the distinct ones).

The product of its digits is 392, while the sum is 23.

The square root of 11721272 is about 3423.6343262679. The cubic root of 11721272 is about 227.1563672575.

Adding to 11721272 its reverse (27212711), we get a palindrome (38933983).

The spelling of 11721272 in words is "eleven million, seven hundred twenty-one thousand, two hundred seventy-two".