406580028 has 48 divisors (see below), whose sum is σ = 963768960. Its totient is φ = 133389504.

The previous prime is 406580023. The next prime is 406580047. The reversal of 406580028 is 820085604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406580023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212251 + ... + 214157.

It is an arithmetic number, because the mean of its divisors is an integer number (20078520).

Almost surely, 2^406580028 is an apocalyptic number.

It is an amenable number.

406580028 is an abundant number, since it is smaller than the sum of its proper divisors (557188932).

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

406580028 is a wasteful number, since it uses less digits than its factorization.

406580028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2186 (or 2184 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 406580028 is about 20163.8296957696. The cubic root of 406580028 is about 740.8245180283.

The spelling of 406580028 in words is "four hundred six million, five hundred eighty thousand, twenty-eight".