628289703 has 20 divisors (see below), whose sum is σ = 939667608. Its totient is φ = 418363920.

The previous prime is 628289639. The next prime is 628289731. The reversal of 628289703 is 307982826.

It is not a de Polignac number, because 628289703 - 2⁶ = 628289639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628289773) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 72100 + ... + 80342.

Almost surely, 2^628289703 is an apocalyptic number.

628289703 is a deficient number, since it is larger than the sum of its proper divisors (311377905).

628289703 is an equidigital number, since it uses as much as digits as its factorization.

628289703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9196 (or 9187 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 628289703 is about 25065.7077099371. The cubic root of 628289703 is about 856.4854325659.

The spelling of 628289703 in words is "six hundred twenty-eight million, two hundred eighty-nine thousand, seven hundred three".