804421780 has 24 divisors (see below), whose sum is σ = 1762733952. Its totient is φ = 307778592.

The previous prime is 804421777. The next prime is 804421781. The reversal of 804421780 is 87124408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (804421781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 873912 + ... + 874831.

It is an arithmetic number, because the mean of its divisors is an integer number (73447248).

Almost surely, 2^804421780 is an apocalyptic number.

It is an amenable number.

804421780 is an abundant number, since it is smaller than the sum of its proper divisors (958312172).

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

804421780 is a wasteful number, since it uses less digits than its factorization.

804421780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1748775 (or 1748773 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 804421780 is about 28362.3302991838. The cubic root of 804421780 is about 930.0249656072.

The spelling of 804421780 in words is "eight hundred four million, four hundred twenty-one thousand, seven hundred eighty".