11721032 has 8 divisors (see below), whose sum is σ = 21976950. Its totient is φ = 5860512.

The previous prime is 11721029. The next prime is 11721037. The reversal of 11721032 is 23012711.

It can be written as a sum of positive squares in only one way, i.e., 11464996 + 256036 = 3386^2 + 506^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×11721032² = 274765182290048, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11721032.

It is not an unprimeable number, because it can be changed into a prime (11721037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 732557 + ... + 732572.

Almost surely, 2^11721032 is an apocalyptic number.

It is an amenable number.

11721032 is a deficient number, since it is larger than the sum of its proper divisors (10255918).

11721032 is a wasteful number, since it uses less digits than its factorization.

11721032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1465135 (or 1465131 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 11721032 is about 3423.5992756162. The cubic root of 11721032 is about 227.1548168598.

Adding to 11721032 its reverse (23012711), we get a palindrome (34733743).

The spelling of 11721032 in words is "eleven million, seven hundred twenty-one thousand, thirty-two".