11722072 has 8 divisors (see below), whose sum is σ = 21978900. Its totient is φ = 5861032.

The previous prime is 11722057. The next prime is 11722079. The reversal of 11722072 is 27022711.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11722079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 732622 + ... + 732637.

Almost surely, 2^11722072 is an apocalyptic number.

It is an amenable number.

11722072 is a deficient number, since it is larger than the sum of its proper divisors (10256828).

11722072 is a wasteful number, since it uses less digits than its factorization.

11722072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1465265 (or 1465261 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 11722072 is about 3423.7511591820. The cubic root of 11722072 is about 227.1615350971.

Adding to 11722072 its reverse (27022711), we get a palindrome (38744783).

The spelling of 11722072 in words is "eleven million, seven hundred twenty-two thousand, seventy-two".