628441287 has 8 divisors (see below), whose sum is σ = 848528640. Its totient is φ = 413657400.

The previous prime is 628441279. The next prime is 628441301. The reversal of 628441287 is 782144826.

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

It is not a de Polignac number, because 628441287 - 2³ = 628441279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628441237) 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, 1325589 + ... + 1326062.

It is an arithmetic number, because the mean of its divisors is an integer number (106066080).

Almost surely, 2^628441287 is an apocalyptic number.

628441287 is a deficient number, since it is larger than the sum of its proper divisors (220087353).

628441287 is a wasteful number, since it uses less digits than its factorization.

628441287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2651733.

The product of its digits is 172032, while the sum is 42.

The square root of 628441287 is about 25068.7312602772. The cubic root of 628441287 is about 856.5543068700.

The spelling of 628441287 in words is "six hundred twenty-eight million, four hundred forty-one thousand, two hundred eighty-seven".