11143320 has 32 divisors (see below), whose sum is σ = 33430320. Its totient is φ = 2971520.

The previous prime is 11143309. The next prime is 11143333. The reversal of 11143320 is 2334111.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 11143320.

It is a congruent number.

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, 46311 + ... + 46550.

Almost surely, 2^11143320 is an apocalyptic number.

11143320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11143320 is an abundant number, since it is smaller than the sum of its proper divisors (22287000).

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

11143320 is a wasteful number, since it uses less digits than its factorization.

11143320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92875 (or 92871 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 11143320 is about 3338.1611704650. The cubic root of 11143320 is about 223.3597256006.

Adding to 11143320 its reverse (2334111), we get a palindrome (13477431).

The spelling of 11143320 in words is "eleven million, one hundred forty-three thousand, three hundred twenty".