28568487 has 8 divisors (see below), whose sum is σ = 38117104. Its totient is φ = 19032768.

The previous prime is 28568479. The next prime is 28568503. The reversal of 28568487 is 78486582.

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

It is not a de Polignac number, because 28568487 - 2³ = 28568479 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 (28568417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4803 + ... + 8955.

It is an arithmetic number, because the mean of its divisors is an integer number (4764638).

Almost surely, 2^28568487 is an apocalyptic number.

28568487 is a deficient number, since it is larger than the sum of its proper divisors (9548617).

28568487 is a wasteful number, since it uses less digits than its factorization.

28568487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6449.

The product of its digits is 860160, while the sum is 48.

The square root of 28568487 is about 5344.9496723543. The cubic root of 28568487 is about 305.7002168908.

The spelling of 28568487 in words is "twenty-eight million, five hundred sixty-eight thousand, four hundred eighty-seven".