11689744 has 40 divisors (see below), whose sum is σ = 26167968. Its totient is φ = 4999680.

The previous prime is 11689739. The next prime is 11689747. The reversal of 11689744 is 44798611.

It is a super-2 number, since 2×11689744² = 273300229571072, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11689697 and 11689706.

It is not an unprimeable number, because it can be changed into a prime (11689747) 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 7 ways as a sum of consecutive naturals, for example, 1039 + ... + 4945.

It is a vampire number, since it can be written as 1496 ⋅ 7814 (with its own digits).

Almost surely, 2^11689744 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 11689744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13083984).

11689744 is an abundant number, since it is smaller than the sum of its proper divisors (14478224).

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

11689744 is a wasteful number, since it uses less digits than its factorization.

11689744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3943 (or 3937 counting only the distinct ones).

The product of its digits is 48384, while the sum is 40.

The square root of 11689744 is about 3419.0267621064. The cubic root of 11689744 is about 226.9525151829.

The spelling of 11689744 in words is "eleven million, six hundred eighty-nine thousand, seven hundred forty-four".