628348287 has 8 divisors (see below), whose sum is σ = 957483136. Its totient is φ = 359056152.

The previous prime is 628348261. The next prime is 628348333. The reversal of 628348287 is 782843826.

It is a happy number.

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

It is not a de Polignac number, because 628348287 - 2⁷ = 628348159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628348087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14960653 + ... + 14960694.

It is an arithmetic number, because the mean of its divisors is an integer number (119685392).

Almost surely, 2^628348287 is an apocalyptic number.

628348287 is a deficient number, since it is larger than the sum of its proper divisors (329134849).

628348287 is a wasteful number, since it uses less digits than its factorization.

628348287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29921357.

The product of its digits is 1032192, while the sum is 48.

The square root of 628348287 is about 25066.8762912334. The cubic root of 628348287 is about 856.5120523364.

The spelling of 628348287 in words is "six hundred twenty-eight million, three hundred forty-eight thousand, two hundred eighty-seven".