804979280 has 80 divisors (see below), whose sum is σ = 2155469184. Its totient is φ = 273861120.

The previous prime is 804979271. The next prime is 804979321. The reversal of 804979280 is 82979408.

804979280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

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, 67874 + ... + 78846.

Almost surely, 2^804979280 is an apocalyptic number.

804979280 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 804979280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1077734592).

804979280 is an abundant number, since it is smaller than the sum of its proper divisors (1350489904).

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

804979280 is a wasteful number, since it uses less digits than its factorization.

804979280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11124 (or 11118 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 804979280 is about 28372.1567738514. The cubic root of 804979280 is about 930.2397655205.

The spelling of 804979280 in words is "eight hundred four million, nine hundred seventy-nine thousand, two hundred eighty".