810421080 has 64 divisors (see below), whose sum is σ = 2778589440. Its totient is φ = 185238912.

The previous prime is 810421067. The next prime is 810421081. The reversal of 810421080 is 80124018.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 810421080.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (810421081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 481554 + ... + 483233.

It is an arithmetic number, because the mean of its divisors is an integer number (43415460).

Almost surely, 2^810421080 is an apocalyptic number.

It is an amenable number.

810421080 is an abundant number, since it is smaller than the sum of its proper divisors (1968168360).

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

810421080 is a wasteful number, since it uses less digits than its factorization.

810421080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964808 (or 964804 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 810421080 is about 28467.8956018881. The cubic root of 810421080 is about 932.3312538609.

Adding to 810421080 its reverse (80124018), we get a palindrome (890545098).

The spelling of 810421080 in words is "eight hundred ten million, four hundred twenty-one thousand, eighty".