11143040 has 64 divisors (see below), whose sum is σ = 27833760. Its totient is φ = 4257792.

The previous prime is 11143037. The next prime is 11143049. The reversal of 11143040 is 4034111.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11143049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14342 + ... + 15098.

Almost surely, 2^11143040 is an apocalyptic number.

11143040 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 11143040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13916880).

11143040 is an abundant number, since it is smaller than the sum of its proper divisors (16690720).

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

11143040 is an equidigital number, since it uses as much as digits as its factorization.

11143040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799 (or 787 counting only the distinct ones).

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

The square root of 11143040 is about 3338.1192309443. The cubic root of 11143040 is about 223.3578547863.

Adding to 11143040 its reverse (4034111), we get a palindrome (15177151).

The spelling of 11143040 in words is "eleven million, one hundred forty-three thousand, forty".