628408608 has 24 divisors (see below), whose sum is σ = 1649572848. Its totient is φ = 209469504.

The previous prime is 628408607. The next prime is 628408609. The reversal of 628408608 is 806804826.

It is an interprime number because it is at equal distance from previous prime (628408607) and next prime (628408609).

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 628408608.

It is not an unprimeable number, because it can be changed into a prime (628408607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3272866 + ... + 3273057.

It is an arithmetic number, because the mean of its divisors is an integer number (68732202).

Almost surely, 2^628408608 is an apocalyptic number.

It is an amenable number.

628408608 is an abundant number, since it is smaller than the sum of its proper divisors (1021164240).

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

628408608 is a wasteful number, since it uses less digits than its factorization.

628408608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6545936 (or 6545928 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 42.

The square root of 628408608 is about 25068.0794637324. The cubic root of 628408608 is about 856.5394596472.

The spelling of 628408608 in words is "six hundred twenty-eight million, four hundred eight thousand, six hundred eight".