11813620 has 48 divisors (see below), whose sum is σ = 30538368. Its totient is φ = 3738240.

The previous prime is 11813609. The next prime is 11813621. The reversal of 11813620 is 2631811.

It is a junction number, because it is equal to n+sod(n) for n = 11813591 and 11813600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11813621) 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 15 ways as a sum of consecutive naturals, for example, 1426 + ... + 5065.

It is an arithmetic number, because the mean of its divisors is an integer number (636216).

Almost surely, 2^11813620 is an apocalyptic number.

11813620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11813620 is an abundant number, since it is smaller than the sum of its proper divisors (18724748).

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

11813620 is a wasteful number, since it uses less digits than its factorization.

11813620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6520 (or 6518 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 11813620 is about 3437.0947033796. The cubic root of 11813620 is about 227.7513705037.

The spelling of 11813620 in words is "eleven million, eight hundred thirteen thousand, six hundred twenty".