404223210 has 144 divisors (see below), whose sum is σ = 1120220712. Its totient is φ = 104976000.

The previous prime is 404223203. The next prime is 404223227. The reversal of 404223210 is 12322404.

It can be written as a sum of positive squares in 4 ways, for example, as 320445801 + 83777409 = 17901^2 + 9153^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4002160 + ... + 4002260.

Almost surely, 2^404223210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 404223210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (560110356).

404223210 is an abundant number, since it is smaller than the sum of its proper divisors (715997502).

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

404223210 is an equidigital number, since it uses as much as digits as its factorization.

404223210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 404223210 is about 20105.3030317874. The cubic root of 404223210 is about 739.3903000835.

Adding to 404223210 its reverse (12322404), we get a palindrome (416545614).

The spelling of 404223210 in words is "four hundred four million, two hundred twenty-three thousand, two hundred ten".