628944003 has 24 divisors (see below), whose sum is σ = 919114560. Its totient is φ = 414414000.

The previous prime is 628943981. The next prime is 628944047. The reversal of 628944003 is 300449826.

It is a happy number.

It is not a de Polignac number, because 628944003 - 2⁵ = 628943971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (628944073) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 313000 + ... + 315002.

It is an arithmetic number, because the mean of its divisors is an integer number (38296440).

Almost surely, 2^628944003 is an apocalyptic number.

628944003 is a deficient number, since it is larger than the sum of its proper divisors (290170557).

628944003 is a wasteful number, since it uses less digits than its factorization.

628944003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2399 (or 2396 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 628944003 is about 25078.7560098183. The cubic root of 628944003 is about 856.7826436537.

The spelling of 628944003 in words is "six hundred twenty-eight million, nine hundred forty-four thousand, three".