11222440 has 16 divisors (see below), whose sum is σ = 25250580. Its totient is φ = 4488960.

The previous prime is 11222429. The next prime is 11222447. The reversal of 11222440 is 4422211.

It can be written as a sum of positive squares in 2 ways, for example, as 9108324 + 2114116 = 3018^2 + 1454^2 .

It is not an unprimeable number, because it can be changed into a prime (11222447) 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, 140241 + ... + 140320.

Almost surely, 2^11222440 is an apocalyptic number.

11222440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11222440 is an abundant number, since it is smaller than the sum of its proper divisors (14028140).

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

11222440 is a wasteful number, since it uses less digits than its factorization.

11222440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280572 (or 280568 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 11222440 is about 3349.9910447641. The cubic root of 11222440 is about 223.8871136129.

Adding to 11222440 its reverse (4422211), we get a palindrome (15644651).

The spelling of 11222440 in words is "eleven million, two hundred twenty-two thousand, four hundred forty".