1143216 has 60 divisors (see below), whose sum is σ = 3394872. Its totient is φ = 357888.

The previous prime is 1143193. The next prime is 1143217. The reversal of 1143216 is 6123411.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is not an unprimeable number, because it can be changed into a prime (1143217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2215 + ... + 2681.

2^1143216 is an apocalyptic number.

1143216 is a gapful number since it is divisible by the number (16) 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 1143216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1697436).

1143216 is an abundant number, since it is smaller than the sum of its proper divisors (2251656).

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

1143216 is a wasteful number, since it uses less digits than its factorization.

1143216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498 (or 489 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 1143216 is about 1069.2127945362. The cubic root of 1143216 is about 104.5625336364.

Adding to 1143216 its reverse (6123411), we get a palindrome (7266627).

The spelling of 1143216 in words is "one million, one hundred forty-three thousand, two hundred sixteen".