628385847 has 16 divisors (see below), whose sum is σ = 843974880. Its totient is φ = 415872000.

The previous prime is 628385843. The next prime is 628385851. The reversal of 628385847 is 748583826.

It is a happy number.

628385847 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (628385843) and next prime (628385851).

It is not a de Polignac number, because 628385847 - 2² = 628385843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 628385847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628385843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 274347 + ... + 276627.

It is an arithmetic number, because the mean of its divisors is an integer number (52748430).

Almost surely, 2^628385847 is an apocalyptic number.

628385847 is a deficient number, since it is larger than the sum of its proper divisors (215589033).

628385847 is a wasteful number, since it uses less digits than its factorization.

628385847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2914.

The product of its digits is 2580480, while the sum is 51.

The square root of 628385847 is about 25067.6254759002. The cubic root of 628385847 is about 856.5291182176.

The spelling of 628385847 in words is "six hundred twenty-eight million, three hundred eighty-five thousand, eight hundred forty-seven".