11143872 has 56 divisors (see below), whose sum is σ = 32766000. Its totient is φ = 3714048.

The previous prime is 11143871. The next prime is 11143877. The reversal of 11143872 is 27834111.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (11143871) 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, 1497 + ... + 4952.

Almost surely, 2^11143872 is an apocalyptic number.

11143872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11143872 is an abundant number, since it is smaller than the sum of its proper divisors (21622128).

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

11143872 is an equidigital number, since it uses as much as digits as its factorization.

11143872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6470 (or 6454 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 11143872 is about 3338.2438496910. The cubic root of 11143872 is about 223.3634136855.

Adding to 11143872 its reverse (27834111), we get a palindrome (38977983).

The spelling of 11143872 in words is "eleven million, one hundred forty-three thousand, eight hundred seventy-two".