11989256 has 24 divisors (see below), whose sum is σ = 23508030. Its totient is φ = 5731968.

The previous prime is 11989253. The next prime is 11989283. The reversal of 11989256 is 65298911.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10666756 + 1322500 = 3266^2 + 1150^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11989253) 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 in 5 ways as a sum of consecutive naturals, for example, 2816 + ... + 5648.

Almost surely, 2^11989256 is an apocalyptic number.

It is an amenable number.

11989256 is a deficient number, since it is larger than the sum of its proper divisors (11518774).

11989256 is a wasteful number, since it uses less digits than its factorization.

11989256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2885 (or 2858 counting only the distinct ones).

The product of its digits is 38880, while the sum is 41.

The square root of 11989256 is about 3462.5505050468. The cubic root of 11989256 is about 228.8745013876.

The spelling of 11989256 in words is "eleven million, nine hundred eighty-nine thousand, two hundred fifty-six".