11712156 has 12 divisors (see below), whose sum is σ = 27328392. Its totient is φ = 3904048.

The previous prime is 11712137. The next prime is 11712157. The reversal of 11712156 is 65121711.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11712157) 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 in 3 ways as a sum of consecutive naturals, for example, 487995 + ... + 488018.

It is an arithmetic number, because the mean of its divisors is an integer number (2277366).

Almost surely, 2^11712156 is an apocalyptic number.

It is an amenable number.

11712156 is an abundant number, since it is smaller than the sum of its proper divisors (15616236).

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

11712156 is a wasteful number, since it uses less digits than its factorization.

11712156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976020 (or 976018 counting only the distinct ones).

The product of its digits is 420, while the sum is 24.

The square root of 11712156 is about 3422.3027335407. The cubic root of 11712156 is about 227.0974631128.

Adding to 11712156 its reverse (65121711), we get a palindrome (76833867).

The spelling of 11712156 in words is "eleven million, seven hundred twelve thousand, one hundred fifty-six".