402805804 has 12 divisors (see below), whose sum is σ = 707720328. Its totient is φ = 200600000.

The previous prime is 402805801. The next prime is 402805817. The reversal of 402805804 is 408508204.

It is not an unprimeable number, because it can be changed into a prime (402805801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199597 + ... + 201604.

It is an arithmetic number, because the mean of its divisors is an integer number (58976694).

Almost surely, 2^402805804 is an apocalyptic number.

It is an amenable number.

402805804 is a deficient number, since it is larger than the sum of its proper divisors (304914524).

402805804 is a wasteful number, since it uses less digits than its factorization.

402805804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401456 (or 401454 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 402805804 is about 20070.0225211632. The cubic root of 402805804 is about 738.5250655896.

The spelling of 402805804 in words is "four hundred two million, eight hundred five thousand, eight hundred four".