404300028 has 24 divisors (see below), whose sum is σ = 1029127680. Its totient is φ = 122515120.

The previous prime is 404300011. The next prime is 404300041. The reversal of 404300028 is 820003404.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 404299977 and 404300013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1531308 + ... + 1531571.

It is an arithmetic number, because the mean of its divisors is an integer number (42880320).

Almost surely, 2^404300028 is an apocalyptic number.

It is an amenable number.

404300028 is an abundant number, since it is smaller than the sum of its proper divisors (624827652).

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

404300028 is a wasteful number, since it uses less digits than its factorization.

404300028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3062897 (or 3062895 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 404300028 is about 20107.2133325332. The cubic root of 404300028 is about 739.4371346748.

The spelling of 404300028 in words is "four hundred four million, three hundred thousand, twenty-eight".