11383820 has 96 divisors (see below), whose sum is σ = 29331456. Its totient is φ = 3628800.

The previous prime is 11383807. The next prime is 11383843. The reversal of 11383820 is 2838311.

11383820 = T₃₆₅ + T₃₆₆ + ... + T₄₈₈.

It is a self number, because there is not a number n which added to its sum of digits gives 11383820.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 186590 + ... + 186650.

It is an arithmetic number, because the mean of its divisors is an integer number (305536).

Almost surely, 2^11383820 is an apocalyptic number.

11383820 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 11383820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14665728).

11383820 is an abundant number, since it is smaller than the sum of its proper divisors (17947636).

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

11383820 is a wasteful number, since it uses less digits than its factorization.

11383820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 11383820 is about 3373.9917012346. The cubic root of 11383820 is about 224.9551844899.

The spelling of 11383820 in words is "eleven million, three hundred eighty-three thousand, eight hundred twenty".