11103820 has 48 divisors (see below), whose sum is σ = 28703808. Its totient is φ = 3513600.

The previous prime is 11103817. The next prime is 11103877. The reversal of 11103820 is 2830111.

11103820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 11103794 and 11103803.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1231 + ... + 4870.

It is an arithmetic number, because the mean of its divisors is an integer number (597996).

Almost surely, 2^11103820 is an apocalyptic number.

11103820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11103820 is an abundant number, since it is smaller than the sum of its proper divisors (17599988).

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

11103820 is a wasteful number, since it uses less digits than its factorization.

11103820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6130 (or 6128 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 11103820 is about 3332.2394871918. The cubic root of 11103820 is about 223.0954969138.

Adding to 11103820 its reverse (2830111), we get a palindrome (13933931).

The spelling of 11103820 in words is "eleven million, one hundred three thousand, eight hundred twenty".