804356 has 24 divisors (see below), whose sum is σ = 1680000. Its totient is φ = 329472.

The previous prime is 804341. The next prime is 804367. The reversal of 804356 is 653408.

804356 = T₈ + T₉ + ... + T₁₆₈.

It is a Cunningham number, because it is equal to 93³-1.

It is an Ulam number.

It is an unprimeable number.

804356 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20 + ... + 1268.

It is an arithmetic number, because the mean of its divisors is an integer number (70000).

2⁸⁰⁴³⁵⁶ 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 804356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (840000).

804356 is an abundant number, since it is smaller than the sum of its proper divisors (875644).

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

804356 is a wasteful number, since it uses less digits than its factorization.

804356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283 (or 1281 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 804356 is about 896.8589632713. The cubic root of 804356 is about 92.9999614599. Note that the first 4 decimals are identical.

The spelling of 804356 in words is "eight hundred four thousand, three hundred fifty-six".