11220480 has 120 divisors (see below), whose sum is σ = 38939472. Its totient is φ = 2985984.

The previous prime is 11220467. The next prime is 11220487. The reversal of 11220480 is 8402211.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220487) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22797 + ... + 23283.

Almost surely, 2^11220480 is an apocalyptic number.

11220480 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 11220480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19469736).

11220480 is an abundant number, since it is smaller than the sum of its proper divisors (27718992).

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

11220480 is an equidigital number, since it uses as much as digits as its factorization.

11220480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516 (or 497 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 11220480 is about 3349.6984938946. The cubic root of 11220480 is about 223.8740788868.

Adding to 11220480 its reverse (8402211), we get a palindrome (19622691).

The spelling of 11220480 in words is "eleven million, two hundred twenty thousand, four hundred eighty".