2856823885 has 8 divisors (see below), whose sum is σ = 3462131736. Its totient is φ = 2262830400.

The previous prime is 2856823883. The next prime is 2856823891. The reversal of 2856823885 is 5883286582.

2856823885 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1118434249 + 1738389636 = 33443^2 + 41694^2 .

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

It is not a de Polignac number, because 2856823885 - 2¹ = 2856823883 is a prime.

It is a super-2 number, since 2×2856823885² = 16322885419812986450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2856823883) 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, 2828034 + ... + 2829043.

It is an arithmetic number, because the mean of its divisors is an integer number (432766467).

Almost surely, 2^2856823885 is an apocalyptic number.

It is an amenable number.

2856823885 is a deficient number, since it is larger than the sum of its proper divisors (605307851).

2856823885 is a wasteful number, since it uses less digits than its factorization.

2856823885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5657183.

The product of its digits is 7372800, while the sum is 55.

The square root of 2856823885 is about 53449.2645880184. The cubic root of 2856823885 is about 1418.9306047842.

The spelling of 2856823885 in words is "two billion, eight hundred fifty-six million, eight hundred twenty-three thousand, eight hundred eighty-five".