1143816 has 16 divisors (see below), whose sum is σ = 2859600. Its totient is φ = 381264.

The previous prime is 1143809. The next prime is 1143817. The reversal of 1143816 is 6183411.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 47659 = 1143816 / (1 + 1 + 4 + 3 + 8 + 1 + 6).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1143817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23806 + ... + 23853.

It is an arithmetic number, because the mean of its divisors is an integer number (178725).

2^1143816 is an apocalyptic number.

It is an amenable number.

1143816 is an abundant number, since it is smaller than the sum of its proper divisors (1715784).

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

1143816 is a wasteful number, since it uses less digits than its factorization.

1143816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47668 (or 47664 counting only the distinct ones).

The product of its digits is 576, while the sum is 24.

The square root of 1143816 is about 1069.4933379877. The cubic root of 1143816 is about 104.5808231366.

The spelling of 1143816 in words is "one million, one hundred forty-three thousand, eight hundred sixteen".