628488442 has 8 divisors (see below), whose sum is σ = 942841332. Its totient is φ = 314208000.

The previous prime is 628488437. The next prime is 628488457. The reversal of 628488442 is 244884826.

It can be written as a sum of positive squares in 2 ways, for example, as 518427361 + 110061081 = 22769^2 + 10491^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 628488392 and 628488401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17892 + ... + 39712.

Almost surely, 2^628488442 is an apocalyptic number.

628488442 is a deficient number, since it is larger than the sum of its proper divisors (314352890).

628488442 is a wasteful number, since it uses less digits than its factorization.

628488442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36224.

The product of its digits is 786432, while the sum is 46.

The square root of 628488442 is about 25069.6717569257. The cubic root of 628488442 is about 856.5757301432.

The spelling of 628488442 in words is "six hundred twenty-eight million, four hundred eighty-eight thousand, four hundred forty-two".