804040080 has 80 divisors (see below), whose sum is σ = 2578495680. Its totient is φ = 207015424.

The previous prime is 804040063. The next prime is 804040099. The reversal of 804040080 is 80040408.

It is a tau number, because it is divible by the number of its divisors (80).

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

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a self number, because there is not a number n which added to its sum of digits gives 804040080.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 50802 + ... + 64721.

It is an arithmetic number, because the mean of its divisors is an integer number (32231196).

Almost surely, 2^804040080 is an apocalyptic number.

804040080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

804040080 is an abundant number, since it is smaller than the sum of its proper divisors (1774455600).

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

804040080 is a wasteful number, since it uses less digits than its factorization.

804040080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115568 (or 115562 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 804040080 is about 28355.6005050149. The cubic root of 804040080 is about 929.8778426671.

Adding to 804040080 its reverse (80040408), we get a palindrome (884080488).

The spelling of 804040080 in words is "eight hundred four million, forty thousand, eighty".