800543140 has 24 divisors (see below), whose sum is σ = 1683094392. Its totient is φ = 319845120.

The previous prime is 800543123. The next prime is 800543147. The reversal of 800543140 is 41345008.

It can be written as a sum of positive squares in 4 ways, for example, as 179935396 + 620607744 = 13414^2 + 24912^2 .

It is not an unprimeable number, because it can be changed into a prime (800543147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5281 + ... + 40360.

It is an arithmetic number, because the mean of its divisors is an integer number (70128933).

Almost surely, 2^800543140 is an apocalyptic number.

It is an amenable number.

800543140 is an abundant number, since it is smaller than the sum of its proper divisors (882551252).

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

800543140 is a wasteful number, since it uses less digits than its factorization.

800543140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46527 (or 46525 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 800543140 is about 28293.8710677772. The cubic root of 800543140 is about 928.5278052428.

Adding to 800543140 its reverse (41345008), we get a palindrome (841888148).

The spelling of 800543140 in words is "eight hundred million, five hundred forty-three thousand, one hundred forty".