11220450 has 96 divisors (see below), whose sum is σ = 30474240. Its totient is φ = 2721600.

The previous prime is 11220427. The next prime is 11220457. The reversal of 11220450 is 5402211.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 88287 + ... + 88413.

It is an arithmetic number, because the mean of its divisors is an integer number (317440).

Almost surely, 2^11220450 is an apocalyptic number.

11220450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11220450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15237120).

11220450 is an abundant number, since it is smaller than the sum of its proper divisors (19253790).

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

11220450 is a wasteful number, since it uses less digits than its factorization.

11220450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 11220450 is about 3349.6940158767. The cubic root of 11220450 is about 223.8738793639.

Adding to 11220450 its reverse (5402211), we get a palindrome (16622661).

The spelling of 11220450 in words is "eleven million, two hundred twenty thousand, four hundred fifty".