11222480 has 20 divisors (see below), whose sum is σ = 26092452. Its totient is φ = 4488960.

The previous prime is 11222447. The next prime is 11222489. The reversal of 11222480 is 8422211.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6677056 + 4545424 = 2584^2 + 2132^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222489) 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 3 ways as a sum of consecutive naturals, for example, 70061 + ... + 70220.

Almost surely, 2^11222480 is an apocalyptic number.

11222480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11222480 is an abundant number, since it is smaller than the sum of its proper divisors (14869972).

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

11222480 is a wasteful number, since it uses less digits than its factorization.

11222480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140294 (or 140288 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 11222480 is about 3349.9970149240. The cubic root of 11222480 is about 223.8873796119.

Adding to 11222480 its sum of digits (20), we get a square (11222500 = 3350²).

Adding to 11222480 its reverse (8422211), we get a palindrome (19644691).

The spelling of 11222480 in words is "eleven million, two hundred twenty-two thousand, four hundred eighty".