11689356 has 72 divisors (see below), whose sum is σ = 32664576. Its totient is φ = 3183840.

The previous prime is 11689343. The next prime is 11689357. The reversal of 11689356 is 65398611.

11689356 = 599² + 600² + ... + 629².

11689356 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11689357) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 174435 + ... + 174501.

Almost surely, 2^11689356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11689356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16332288).

11689356 is an abundant number, since it is smaller than the sum of its proper divisors (20975220).

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

11689356 is a wasteful number, since it uses less digits than its factorization.

11689356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 110 counting only the distinct ones).

The product of its digits is 38880, while the sum is 39.

The square root of 11689356 is about 3418.9700203424. The cubic root of 11689356 is about 226.9500041912.

The spelling of 11689356 in words is "eleven million, six hundred eighty-nine thousand, three hundred fifty-six".