628706880 has 112 divisors (see below), whose sum is σ = 2217968640. Its totient is φ = 167652864.

The previous prime is 628706873. The next prime is 628706887. The reversal of 628706880 is 88607826.

It is an interprime number because it is at equal distance from previous prime (628706873) and next prime (628706887).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (628706887) 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 15 ways as a sum of consecutive naturals, for example, 27744 + ... + 45023.

Almost surely, 2^628706880 is an apocalyptic number.

628706880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

628706880 is an abundant number, since it is smaller than the sum of its proper divisors (1589261760).

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

628706880 is a wasteful number, since it uses less digits than its factorization.

628706880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72793 (or 72777 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 628706880 is about 25074.0279971129. The cubic root of 628706880 is about 856.6749560550.

The spelling of 628706880 in words is "six hundred twenty-eight million, seven hundred six thousand, eight hundred eighty".