810530040 has 64 divisors (see below), whose sum is σ = 2483343360. Its totient is φ = 211541120.

The previous prime is 810530011. The next prime is 810530057. The reversal of 810530040 is 40035018.

It is a junction number, because it is equal to n+sod(n) for n = 810529989 and 810530016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66216 + ... + 77495.

It is an arithmetic number, because the mean of its divisors is an integer number (38802240).

Almost surely, 2^810530040 is an apocalyptic number.

It is an amenable number.

810530040 is an abundant number, since it is smaller than the sum of its proper divisors (1672813320).

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

810530040 is a wasteful number, since it uses less digits than its factorization.

810530040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143772 (or 143768 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 810530040 is about 28469.8092722800. The cubic root of 810530040 is about 932.3730355402.

Adding to 810530040 its reverse (40035018), we get a palindrome (850565058).

The spelling of 810530040 in words is "eight hundred ten million, five hundred thirty thousand, forty".