11987512 has 8 divisors (see below), whose sum is σ = 22476600. Its totient is φ = 5993752.

The previous prime is 11987501. The next prime is 11987579. The reversal of 11987512 is 21578911.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

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, 749212 + ... + 749227.

It is an arithmetic number, because the mean of its divisors is an integer number (2809575).

Almost surely, 2^11987512 is an apocalyptic number.

It is an amenable number.

11987512 is a deficient number, since it is larger than the sum of its proper divisors (10489088).

11987512 is a wasteful number, since it uses less digits than its factorization.

11987512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1498445 (or 1498441 counting only the distinct ones).

The product of its digits is 5040, while the sum is 34.

The square root of 11987512 is about 3462.2986584060. The cubic root of 11987512 is about 228.8634032153.

The spelling of 11987512 in words is "eleven million, nine hundred eighty-seven thousand, five hundred twelve".