404821068 has 144 divisors (see below), whose sum is σ = 1106058240. Its totient is φ = 114605568.

The previous prime is 404821057. The next prime is 404821069. The reversal of 404821068 is 860128404.

It is not an unprimeable number, because it can be changed into a prime (404821069) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1693693 + ... + 1693931.

It is an arithmetic number, because the mean of its divisors is an integer number (7680960).

Almost surely, 2^404821068 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 404821068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (553029120).

404821068 is an abundant number, since it is smaller than the sum of its proper divisors (701237172).

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

404821068 is a wasteful number, since it uses less digits than its factorization.

404821068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324 (or 303 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 404821068 is about 20120.1657050830. The cubic root of 404821068 is about 739.7546471726.

The spelling of 404821068 in words is "four hundred four million, eight hundred twenty-one thousand, sixty-eight".