11613920 has 48 divisors (see below), whose sum is σ = 28395360. Its totient is φ = 4483584.

The previous prime is 11613911. The next prime is 11613923. The reversal of 11613920 is 2931611.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11613923) 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, 3389 + ... + 5891.

It is an arithmetic number, because the mean of its divisors is an integer number (591570).

Almost surely, 2^11613920 is an apocalyptic number.

11613920 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 11613920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14197680).

11613920 is an abundant number, since it is smaller than the sum of its proper divisors (16781440).

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

11613920 is a wasteful number, since it uses less digits than its factorization.

11613920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2547 (or 2539 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 11613920 is about 3407.9201868588. The cubic root of 11613920 is about 226.4607510932.

The spelling of 11613920 in words is "eleven million, six hundred thirteen thousand, nine hundred twenty".