1143472 has 40 divisors (see below), whose sum is σ = 2477520. Its totient is φ = 506880.

The previous prime is 1143469. The next prime is 1143473. The reversal of 1143472 is 2743411.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (1143473) 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, 12804 + ... + 12892.

It is an arithmetic number, because the mean of its divisors is an integer number (61938).

2^1143472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1143472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1238760).

1143472 is an abundant number, since it is smaller than the sum of its proper divisors (1334048).

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

1143472 is a wasteful number, since it uses less digits than its factorization.

1143472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181 (or 175 counting only the distinct ones).

The product of its digits is 672, while the sum is 22.

The square root of 1143472 is about 1069.3325020778. The cubic root of 1143472 is about 104.5703379390.

Adding to 1143472 its reverse (2743411), we get a palindrome (3886883).

The spelling of 1143472 in words is "one million, one hundred forty-three thousand, four hundred seventy-two".