408630028 has 12 divisors (see below), whose sum is σ = 724155040. Its totient is φ = 201728592.

The previous prime is 408630007. The next prime is 408630059. The reversal of 408630028 is 820036804.

It is a happy number.

It is an unprimeable number.

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, 646251 + ... + 646882.

Almost surely, 2^408630028 is an apocalyptic number.

It is an amenable number.

408630028 is a deficient number, since it is larger than the sum of its proper divisors (315525012).

408630028 is a wasteful number, since it uses less digits than its factorization.

408630028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1293216 (or 1293214 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 408630028 is about 20214.5993776775. The cubic root of 408630028 is about 742.0675246051.

It can be divided in two parts, 408 and 630028, that added together give a square (630436 = 794²).

The spelling of 408630028 in words is "four hundred eight million, six hundred thirty thousand, twenty-eight".