11963864 has 48 divisors (see below), whose sum is σ = 25681320. Its totient is φ = 5181440.

The previous prime is 11963857. The next prime is 11963867. The reversal of 11963864 is 46836911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11963867) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 46424 + ... + 46680.

Almost surely, 2^11963864 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 11963864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12840660).

11963864 is an abundant number, since it is smaller than the sum of its proper divisors (13717456).

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

11963864 is a wasteful number, since it uses less digits than its factorization.

11963864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320 (or 293 counting only the distinct ones).

The product of its digits is 31104, while the sum is 38.

The square root of 11963864 is about 3458.8819002678. The cubic root of 11963864 is about 228.7128097044.

The spelling of 11963864 in words is "eleven million, nine hundred sixty-three thousand, eight hundred sixty-four".