408805428 has 12 divisors (see below), whose sum is σ = 953879360. Its totient is φ = 136268472.

The previous prime is 408805421. The next prime is 408805499. The reversal of 408805428 is 824508804.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408805421) 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 3 ways as a sum of consecutive naturals, for example, 17033548 + ... + 17033571.

Almost surely, 2^408805428 is an apocalyptic number.

It is an amenable number.

408805428 is an abundant number, since it is smaller than the sum of its proper divisors (545073932).

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

408805428 is a wasteful number, since it uses less digits than its factorization.

408805428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34067126 (or 34067124 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 39.

The square root of 408805428 is about 20218.9373608011. The cubic root of 408805428 is about 742.1736842249.

The spelling of 408805428 in words is "four hundred eight million, eight hundred five thousand, four hundred twenty-eight".