11103440 has 20 divisors (see below), whose sum is σ = 25815684. Its totient is φ = 4441344.

The previous prime is 11103437. The next prime is 11103461. The reversal of 11103440 is 4430111.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5071504 + 6031936 = 2252^2 + 2456^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69317 + ... + 69476.

Almost surely, 2^11103440 is an apocalyptic number.

11103440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11103440 is an abundant number, since it is smaller than the sum of its proper divisors (14712244).

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

11103440 is a wasteful number, since it uses less digits than its factorization.

11103440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138806 (or 138800 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 11103440 is about 3332.1824679930. The cubic root of 11103440 is about 223.0929519261.

Adding to 11103440 its reverse (4430111), we get a palindrome (15533551).

The spelling of 11103440 in words is "eleven million, one hundred three thousand, four hundred forty".