11689984 has 28 divisors (see below), whose sum is σ = 23394924. Its totient is φ = 5840896.

The previous prime is 11689973. The next prime is 11689991. The reversal of 11689984 is 48998611.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7479 + ... + 8905.

It is an arithmetic number, because the mean of its divisors is an integer number (835533).

Almost surely, 2^11689984 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 11689984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11697462).

11689984 is an abundant number, since it is smaller than the sum of its proper divisors (11704940).

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

11689984 is an frugal number, since it uses more digits than its factorization.

11689984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1453 (or 1429 counting only the distinct ones).

The product of its digits is 124416, while the sum is 46.

The square root of 11689984 is about 3419.0618596334. The cubic root of 11689984 is about 226.9540683458.

It can be divided in two parts, 116 and 89984, that added together give a triangular number (90100 = T₄₂₄).

The spelling of 11689984 in words is "eleven million, six hundred eighty-nine thousand, nine hundred eighty-four".