28858585861 has 8 divisors (see below), whose sum is σ = 33025636224. Its totient is φ = 24702634320.

The previous prime is 28858585859. The next prime is 28858585871. The reversal of 28858585861 is 16858585882.

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

It is not a de Polignac number, because 28858585861 - 2¹ = 28858585859 is a prime.

It is a super-2 number, since 2×28858585861² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28858585793 and 28858585802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28858585871) 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, 2769130 + ... + 2779531.

It is an arithmetic number, because the mean of its divisors is an integer number (4128204528).

Almost surely, 2^28858585861 is an apocalyptic number.

It is an amenable number.

28858585861 is a deficient number, since it is larger than the sum of its proper divisors (4167050363).

28858585861 is an equidigital number, since it uses as much as digits as its factorization.

28858585861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5549411.

The product of its digits is 49152000, while the sum is 64.

The spelling of 28858585861 in words is "twenty-eight billion, eight hundred fifty-eight million, five hundred eighty-five thousand, eight hundred sixty-one".