404004030 has 64 divisors (see below), whose sum is σ = 1031304960. Its totient is φ = 100998144.

The previous prime is 404004023. The next prime is 404004043. The reversal of 404004030 is 30400404.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51637 + ... + 58943.

It is an arithmetic number, because the mean of its divisors is an integer number (16114140).

Almost surely, 2^404004030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 404004030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (515652480).

404004030 is an abundant number, since it is smaller than the sum of its proper divisors (627300930).

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

404004030 is a wasteful number, since it uses less digits than its factorization.

404004030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7433.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 404004030 is about 20099.8514919887. The cubic root of 404004030 is about 739.2566372443.

Adding to 404004030 its reverse (30400404), we get a palindrome (434404434).

The spelling of 404004030 in words is "four hundred four million, four thousand, thirty".