804402 has 48 divisors (see below), whose sum is σ = 1909440. Its totient is φ = 243936.

The previous prime is 804383. The next prime is 804409. The reversal of 804402 is 204408.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 804402.

It is not an unprimeable number, because it can be changed into a prime (804409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11973 + ... + 12039.

It is an arithmetic number, because the mean of its divisors is an integer number (39780).

2⁸⁰⁴⁴⁰² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 804402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (954720).

804402 is an abundant number, since it is smaller than the sum of its proper divisors (1105038).

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

804402 is a wasteful number, since it uses less digits than its factorization.

804402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 804402 is about 896.8846079625. The cubic root of 804402 is about 93.0017342722.

The spelling of 804402 in words is "eight hundred four thousand, four hundred two".