11721232 has 20 divisors (see below), whose sum is σ = 22766400. Its totient is φ = 5846048.

The previous prime is 11721223. The next prime is 11721239. The reversal of 11721232 is 23212711.

It is not an unprimeable number, because it can be changed into a prime (11721239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8973 + ... + 10195.

It is an arithmetic number, because the mean of its divisors is an integer number (1138320).

Almost surely, 2^11721232 is an apocalyptic number.

It is an amenable number.

11721232 is a deficient number, since it is larger than the sum of its proper divisors (11045168).

11721232 is a wasteful number, since it uses less digits than its factorization.

11721232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1830 (or 1824 counting only the distinct ones).

The product of its digits is 168, while the sum is 19.

The square root of 11721232 is about 3423.6284845176. The cubic root of 11721232 is about 227.1561088594.

Adding to 11721232 its reverse (23212711), we get a palindrome (34933943).

The spelling of 11721232 in words is "eleven million, seven hundred twenty-one thousand, two hundred thirty-two".