628425888 has 48 divisors (see below), whose sum is σ = 1651053600. Its totient is φ = 209293056.

The previous prime is 628425869. The next prime is 628425923. The reversal of 628425888 is 888524826.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 628425888.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 151263 + ... + 155361.

It is an arithmetic number, because the mean of its divisors is an integer number (34396950).

Almost surely, 2^628425888 is an apocalyptic number.

It is an amenable number.

628425888 is an abundant number, since it is smaller than the sum of its proper divisors (1022627712).

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

628425888 is a wasteful number, since it uses less digits than its factorization.

628425888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5709 (or 5701 counting only the distinct ones).

The product of its digits is 1966080, while the sum is 51.

The square root of 628425888 is about 25068.4241227884. The cubic root of 628425888 is about 856.5473106250.

The spelling of 628425888 in words is "six hundred twenty-eight million, four hundred twenty-five thousand, eight hundred eighty-eight".