11889556 has 18 divisors (see below), whose sum is σ = 24204138. Its totient is φ = 5095440.

The previous prime is 11889547. The next prime is 11889569. The reversal of 11889556 is 65598811.

It can be written as a sum of positive squares in only one way, i.e., 8317456 + 3572100 = 2884^2 + 1890^2 .

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 in 5 ways as a sum of consecutive naturals, for example, 30135 + ... + 30526.

Almost surely, 2^11889556 is an apocalyptic number.

It is an amenable number.

11889556 is an abundant number, since it is smaller than the sum of its proper divisors (12314582).

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

11889556 is a wasteful number, since it uses less digits than its factorization.

11889556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60679 (or 60670 counting only the distinct ones).

The product of its digits is 86400, while the sum is 43.

The square root of 11889556 is about 3448.1235476705. The cubic root of 11889556 is about 228.2383114068.

The spelling of 11889556 in words is "eleven million, eight hundred eighty-nine thousand, five hundred fifty-six".