11030220 has 72 divisors (see below), whose sum is σ = 33729696. Its totient is φ = 2917632.

The previous prime is 11030219. The next prime is 11030221. The reversal of 11030220 is 2203011.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11030219) and next prime (11030221).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (11030221) 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 23 ways as a sum of consecutive naturals, for example, 41809 + ... + 42071.

It is an arithmetic number, because the mean of its divisors is an integer number (468468).

Almost surely, 2^11030220 is an apocalyptic number.

11030220 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 11030220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16864848).

11030220 is an abundant number, since it is smaller than the sum of its proper divisors (22699476).

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

11030220 is a wasteful number, since it uses less digits than its factorization.

11030220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511 (or 506 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 11030220 is about 3321.1775020315. The cubic root of 11030220 is about 222.6014854971.

Adding to 11030220 its reverse (2203011), we get a palindrome (13233231).

The spelling of 11030220 in words is "eleven million, thirty thousand, two hundred twenty".