428978608 has 20 divisors (see below), whose sum is σ = 846829728. Its totient is φ = 210441920.

The previous prime is 428978579. The next prime is 428978609. The reversal of 428978608 is 806879824.

It is a super-2 number, since 2×428978608² = 368045292243235328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (428978609) 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, 252088 + ... + 253783.

Almost surely, 2^428978608 is an apocalyptic number.

It is an amenable number.

428978608 is a deficient number, since it is larger than the sum of its proper divisors (417851120).

428978608 is a wasteful number, since it uses less digits than its factorization.

428978608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505932 (or 505926 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 52.

The square root of 428978608 is about 20711.7987630239. The cubic root of 428978608 is about 754.1861370199.

The spelling of 428978608 in words is "four hundred twenty-eight million, nine hundred seventy-eight thousand, six hundred eight".