404023000 has 64 divisors (see below), whose sum is σ = 975985920. Its totient is φ = 156384000.

The previous prime is 404022961. The next prime is 404023007. The reversal of 404023000 is 320404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404023007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24484 + ... + 37516.

It is an arithmetic number, because the mean of its divisors is an integer number (15249780).

Almost surely, 2^404023000 is an apocalyptic number.

404023000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 404023000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (487992960).

404023000 is an abundant number, since it is smaller than the sum of its proper divisors (571962920).

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

404023000 is a wasteful number, since it uses less digits than its factorization.

404023000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13085 (or 13071 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 404023000 is about 20100.3233804832. The cubic root of 404023000 is about 739.2682076561.

Adding to 404023000 its reverse (320404), we get a palindrome (404343404).

The spelling of 404023000 in words is "four hundred four million, twenty-three thousand".