11143380 has 24 divisors (see below), whose sum is σ = 31201632. Its totient is φ = 2971552.

The previous prime is 11143357. The next prime is 11143387. The reversal of 11143380 is 8334111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11143387) 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, 92802 + ... + 92921.

It is an arithmetic number, because the mean of its divisors is an integer number (1300068).

Almost surely, 2^11143380 is an apocalyptic number.

11143380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11143380 is an abundant number, since it is smaller than the sum of its proper divisors (20058252).

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

11143380 is a wasteful number, since it uses less digits than its factorization.

11143380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185735 (or 185733 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 11143380 is about 3338.1701574366. The cubic root of 11143380 is about 223.3601264853.

Adding to 11143380 its reverse (8334111), we get a palindrome (19477491).

The spelling of 11143380 in words is "eleven million, one hundred forty-three thousand, three hundred eighty".