628203129 has 4 divisors (see below), whose sum is σ = 837604176. Its totient is φ = 418802084.

The previous prime is 628203083. The next prime is 628203143. The reversal of 628203129 is 921302826.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 628203129 - 2⁸ = 628202873 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 628203129.

It is not an unprimeable number, because it can be changed into a prime (628201129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104700519 + ... + 104700524.

It is an arithmetic number, because the mean of its divisors is an integer number (209401044).

Almost surely, 2^628203129 is an apocalyptic number.

It is an amenable number.

628203129 is a deficient number, since it is larger than the sum of its proper divisors (209401047).

628203129 is a wasteful number, since it uses less digits than its factorization.

628203129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209401046.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 628203129 is about 25063.9807093766. The cubic root of 628203129 is about 856.4460914915.

The spelling of 628203129 in words is "six hundred twenty-eight million, two hundred three thousand, one hundred twenty-nine".