628228799 has 4 divisors (see below), whose sum is σ = 685340520. Its totient is φ = 571117080.

The previous prime is 628228793. The next prime is 628228807. The reversal of 628228799 is 997822826.

628228799 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 628228799 - 2⁸ = 628228543 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 628228799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628228793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28555844 + ... + 28555865.

It is an arithmetic number, because the mean of its divisors is an integer number (171335130).

Almost surely, 2^628228799 is an apocalyptic number.

628228799 is a deficient number, since it is larger than the sum of its proper divisors (57111721).

628228799 is a wasteful number, since it uses less digits than its factorization.

628228799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57111720.

The product of its digits is 1741824, while the sum is 53.

The square root of 628228799 is about 25064.4927935915. The cubic root of 628228799 is about 856.4577568646.

The spelling of 628228799 in words is "six hundred twenty-eight million, two hundred twenty-eight thousand, seven hundred ninety-nine".