428860838287 has 8 divisors (see below), whose sum is σ = 497029865472. Its totient is φ = 362417609400.

The previous prime is 428860838251. The next prime is 428860838299. The reversal of 428860838287 is 782838068824.

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

It is a de Polignac number, because none of the positive numbers 2^k-428860838287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428860838207) 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, 431449039 + ... + 431450032.

It is an arithmetic number, because the mean of its divisors is an integer number (62128733184).

Almost surely, 2^428860838287 is an apocalyptic number.

428860838287 is a deficient number, since it is larger than the sum of its proper divisors (68169027185).

428860838287 is an equidigital number, since it uses as much as digits as its factorization.

428860838287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862899149.

The product of its (nonzero) digits is 66060288, while the sum is 64.

The spelling of 428860838287 in words is "four hundred twenty-eight billion, eight hundred sixty million, eight hundred thirty-eight thousand, two hundred eighty-seven".