11223440 has 40 divisors (see below), whose sum is σ = 26248320. Its totient is φ = 4462976.

The previous prime is 11223437. The next prime is 11223461. The reversal of 11223440 is 4432211.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18827 + ... + 19413.

It is an arithmetic number, because the mean of its divisors is an integer number (656208).

Almost surely, 2^11223440 is an apocalyptic number.

11223440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11223440 is an abundant number, since it is smaller than the sum of its proper divisors (15024880).

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

11223440 is a wasteful number, since it uses less digits than its factorization.

11223440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839 (or 833 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 11223440 is about 3350.1402955697. The cubic root of 11223440 is about 223.8937633986.

Adding to 11223440 its reverse (4432211), we get a palindrome (15655651).

The spelling of 11223440 in words is "eleven million, two hundred twenty-three thousand, four hundred forty".