1143808 has 22 divisors (see below), whose sum is σ = 2288546. Its totient is φ = 571392.

The previous prime is 1143803. The next prime is 1143809. The reversal of 1143808 is 8083411.

It can be written as a sum of positive squares in only one way, i.e., 692224 + 451584 = 832^2 + 672^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 466 + ... + 1582.

2^1143808 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 1143808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1144273).

1143808 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1143808 is an equidigital number, since it uses as much as digits as its factorization.

1143808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137 (or 1119 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 1143808 is about 1069.4895978924. The cubic root of 1143808 is about 104.5805793186.

The spelling of 1143808 in words is "one million, one hundred forty-three thousand, eight hundred eight".