628421002 has 24 divisors (see below), whose sum is σ = 1037425536. Its totient is φ = 285499500.

The previous prime is 628420979. The next prime is 628421041. The reversal of 628421002 is 200124826.

It is a happy number.

628421002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 321127 + ... + 323077.

It is an arithmetic number, because the mean of its divisors is an integer number (43226064).

Almost surely, 2^628421002 is an apocalyptic number.

628421002 is a deficient number, since it is larger than the sum of its proper divisors (409004534).

628421002 is an frugal number, since it uses more digits than its factorization.

628421002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2008 (or 1964 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 628421002 is about 25068.3266693252. The cubic root of 628421002 is about 856.5450907393.

Adding to 628421002 its reverse (200124826), we get a palindrome (828545828).

The spelling of 628421002 in words is "six hundred twenty-eight million, four hundred twenty-one thousand, two".