628640016 has 20 divisors (see below), whose sum is σ = 1623986832. Its totient is φ = 209546656.

The previous prime is 628639987. The next prime is 628640017. The reversal of 628640016 is 610046826.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (628640017) 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, 6548286 + ... + 6548381.

Almost surely, 2^628640016 is an apocalyptic number.

It is an amenable number.

628640016 is an abundant number, since it is smaller than the sum of its proper divisors (995346816).

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

628640016 is a wasteful number, since it uses less digits than its factorization.

628640016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13096678 (or 13096672 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 628640016 is about 25072.6946298159. The cubic root of 628640016 is about 856.6445853864.

The spelling of 628640016 in words is "six hundred twenty-eight million, six hundred forty thousand, sixteen".