28857460287 has 8 divisors (see below), whose sum is σ = 38477404336. Its totient is φ = 19237911552.

The previous prime is 28857460223. The next prime is 28857460369. The reversal of 28857460287 is 78206475882.

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

It is not a de Polignac number, because 28857460287 - 2⁶ = 28857460223 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 (28857460217) 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, 204543 + ... + 315519.

It is an arithmetic number, because the mean of its divisors is an integer number (4809675542).

Almost surely, 2^28857460287 is an apocalyptic number.

28857460287 is a deficient number, since it is larger than the sum of its proper divisors (9619944049).

28857460287 is a wasteful number, since it uses less digits than its factorization.

28857460287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197657.

The product of its (nonzero) digits is 12042240, while the sum is 57.

The spelling of 28857460287 in words is "twenty-eight billion, eight hundred fifty-seven million, four hundred sixty thousand, two hundred eighty-seven".