628540003 has 12 divisors (see below), whose sum is σ = 787402560. Its totient is φ = 497305872.

The previous prime is 628539991. The next prime is 628540027. The reversal of 628540003 is 300045826.

628540003 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 628540003 - 2¹⁷ = 628408931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (628540103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 492723 + ... + 493996.

It is an arithmetic number, because the mean of its divisors is an integer number (65616880).

Almost surely, 2^628540003 is an apocalyptic number.

628540003 is a deficient number, since it is larger than the sum of its proper divisors (158862557).

628540003 is a wasteful number, since it uses less digits than its factorization.

628540003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986746 (or 986739 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 628540003 is about 25070.7000899456. The cubic root of 628540003 is about 856.5991539065.

Adding to 628540003 its reverse (300045826), we get a palindrome (928585829).

The spelling of 628540003 in words is "six hundred twenty-eight million, five hundred forty thousand, three".