804544 has 28 divisors (see below), whose sum is σ = 1721104. Its totient is φ = 370944.

The previous prime is 804541. The next prime is 804553. The reversal of 804544 is 445408.

It is a plaindrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (804541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 349 + ... + 1315.

It is an arithmetic number, because the mean of its divisors is an integer number (61468).

2⁸⁰⁴⁵⁴⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 804544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (860552).

804544 is an abundant number, since it is smaller than the sum of its proper divisors (916560).

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

804544 is a wasteful number, since it uses less digits than its factorization.

804544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992 (or 982 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 804544 is about 896.9637673842. The cubic root of 804544 is about 93.0072064405.

It can be divided in two parts, 80 and 4544, that added together give a square (4624 = 68²).

The spelling of 804544 in words is "eight hundred four thousand, five hundred forty-four".