11943920 has 40 divisors (see below), whose sum is σ = 27962496. Its totient is φ = 4744448.

The previous prime is 11943917. The next prime is 11943929. The reversal of 11943920 is 2934911.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11943929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13409 + ... + 14271.

Almost surely, 2^11943920 is an apocalyptic number.

11943920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11943920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13981248).

11943920 is an abundant number, since it is smaller than the sum of its proper divisors (16018576).

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

11943920 is a wasteful number, since it uses less digits than its factorization.

11943920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049 (or 1043 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 11943920 is about 3455.9976851844. The cubic root of 11943920 is about 228.5856494128.

Subtracting from 11943920 its reverse (2934911), we obtain a palindrome (9009009).

The spelling of 11943920 in words is "eleven million, nine hundred forty-three thousand, nine hundred twenty".