628857746 has 8 divisors (see below), whose sum is σ = 1029039984. Its totient is φ = 285844420.

The previous prime is 628857737. The next prime is 628857781. The reversal of 628857746 is 647758826.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 14292200 + ... + 14292243.

It is an arithmetic number, because the mean of its divisors is an integer number (128629998).

Almost surely, 2^628857746 is an apocalyptic number.

628857746 is a deficient number, since it is larger than the sum of its proper divisors (400182238).

628857746 is a wasteful number, since it uses less digits than its factorization.

628857746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28584456.

The product of its digits is 4515840, while the sum is 53.

The square root of 628857746 is about 25077.0362283903. The cubic root of 628857746 is about 856.7434738289.

The spelling of 628857746 in words is "six hundred twenty-eight million, eight hundred fifty-seven thousand, seven hundred forty-six".