11004220 has 12 divisors (see below), whose sum is σ = 23108904. Its totient is φ = 4401680.

The previous prime is 11004209. The next prime is 11004221. The reversal of 11004220 is 2240011.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 11004197 and 11004206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11004221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275086 + ... + 275125.

It is an arithmetic number, because the mean of its divisors is an integer number (1925742).

Almost surely, 2^11004220 is an apocalyptic number.

11004220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11004220 is an abundant number, since it is smaller than the sum of its proper divisors (12104684).

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

11004220 is a wasteful number, since it uses less digits than its factorization.

11004220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550220 (or 550218 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 11004220 is about 3317.2609182879. The cubic root of 11004220 is about 222.4264454087.

Adding to 11004220 its reverse (2240011), we get a palindrome (13244231).

The spelling of 11004220 in words is "eleven million, four thousand, two hundred twenty".