11003020 has 24 divisors (see below), whose sum is σ = 26407584. Its totient is φ = 3772416.

The previous prime is 11003011. The next prime is 11003021. The reversal of 11003020 is 2030011.

11003020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a junction number, because it is equal to n+sod(n) for n = 11002994 and 11003012.

It is not an unprimeable number, because it can be changed into a prime (11003021) 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, 39157 + ... + 39436.

It is an arithmetic number, because the mean of its divisors is an integer number (1100316).

Almost surely, 2^11003020 is an apocalyptic number.

11003020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11003020 is an abundant number, since it is smaller than the sum of its proper divisors (15404564).

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

11003020 is a wasteful number, since it uses less digits than its factorization.

11003020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78609 (or 78607 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 11003020 is about 3317.0800412411. The cubic root of 11003020 is about 222.4183599821.

Adding to 11003020 its reverse (2030011), we get a palindrome (13033031).

The spelling of 11003020 in words is "eleven million, three thousand, twenty".