628051305 has 16 divisors (see below), whose sum is σ = 1148436864. Its totient is φ = 287109120.

The previous prime is 628051301. The next prime is 628051309. The reversal of 628051305 is 503150826.

It is an interprime number because it is at equal distance from previous prime (628051301) and next prime (628051309).

It is not a de Polignac number, because 628051305 - 2² = 628051301 is a prime.

It is not an unprimeable number, because it can be changed into a prime (628051301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2990616 + ... + 2990825.

It is an arithmetic number, because the mean of its divisors is an integer number (71777304).

Almost surely, 2^628051305 is an apocalyptic number.

It is an amenable number.

628051305 is a deficient number, since it is larger than the sum of its proper divisors (520385559).

628051305 is a wasteful number, since it uses less digits than its factorization.

628051305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5981456.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 628051305 is about 25060.9517975675. The cubic root of 628051305 is about 856.3770906955.

The spelling of 628051305 in words is "six hundred twenty-eight million, fifty-one thousand, three hundred five".