628312047 has 8 divisors (see below), whose sum is σ = 913908480. Its totient is φ = 380795160.

The previous prime is 628312039. The next prime is 628312049. The reversal of 628312047 is 740213826.

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

It is not a de Polignac number, because 628312047 - 2³ = 628312039 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 19039759 = 628312047 / (6 + 2 + 8 + 3 + 1 + 2 + 0 + 4 + 7).

It is a junction number, because it is equal to n+sod(n) for n = 628311999 and 628312017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628312049) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9519847 + ... + 9519912.

It is an arithmetic number, because the mean of its divisors is an integer number (114238560).

Almost surely, 2^628312047 is an apocalyptic number.

628312047 is a deficient number, since it is larger than the sum of its proper divisors (285596433).

628312047 is a wasteful number, since it uses less digits than its factorization.

628312047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19039773.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 628312047 is about 25066.1534145150. The cubic root of 628312047 is about 856.4955855699.

The spelling of 628312047 in words is "six hundred twenty-eight million, three hundred twelve thousand, forty-seven".