628247955 has 32 divisors (see below), whose sum is σ = 1026514944. Its totient is φ = 327989376.

The previous prime is 628247947. The next prime is 628247957. The reversal of 628247955 is 559742826.

628247955 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 628247955 - 2³ = 628247947 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (628247957) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 577422 + ... + 578508.

It is an arithmetic number, because the mean of its divisors is an integer number (32078592).

Almost surely, 2^628247955 is an apocalyptic number.

628247955 is a deficient number, since it is larger than the sum of its proper divisors (398266989).

628247955 is a wasteful number, since it uses less digits than its factorization.

628247955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1875.

The product of its digits is 1209600, while the sum is 48.

The square root of 628247955 is about 25064.8749248824. The cubic root of 628247955 is about 856.4664618344.

The spelling of 628247955 in words is "six hundred twenty-eight million, two hundred forty-seven thousand, nine hundred fifty-five".