628039255 has 4 divisors (see below), whose sum is σ = 753647112. Its totient is φ = 502431400.

The previous prime is 628039253. The next prime is 628039273. The reversal of 628039255 is 552930826.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 628039255 - 2¹ = 628039253 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628039253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62803921 + ... + 62803930.

It is an arithmetic number, because the mean of its divisors is an integer number (188411778).

Almost surely, 2^628039255 is an apocalyptic number.

628039255 is a deficient number, since it is larger than the sum of its proper divisors (125607857).

628039255 is a wasteful number, since it uses less digits than its factorization.

628039255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125607856.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 628039255 is about 25060.7113825606. The cubic root of 628039255 is about 856.3716137491.

The spelling of 628039255 in words is "six hundred twenty-eight million, thirty-nine thousand, two hundred fifty-five".