2856875 has 20 divisors (see below), whose sum is σ = 4086192.
Its totient is φ = 1956000.
The previous prime is 2856871. The next prime is 2856883. The reversal of 2856875 is 5786582.
It is not a de Polignac number, because 2856875 - 22 = 2856871 is a prime.
It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.
It is an Ulam number.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (2856871) by changing a digit.
It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4049 + ... + 4701.
22856875 is an apocalyptic number.
2856875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.
2856875 is a deficient number, since it is larger than the sum of its proper divisors (1229317).
2856875 is an frugal number, since it uses more digits than its factorization.
2856875 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 680 (or 665 counting only the distinct ones).
The product of its digits is 134400, while the sum is 41.
The square root of 2856875 is about 1690.2292743885.
The cubic root of 2856875 is about 141.8939067353.
The spelling of 2856875 in words is "two million, eight hundred fifty-six thousand, eight hundred seventy-five".