2867856 has 20 divisors (see below), whose sum is σ = 7408752. Its totient is φ = 955936.

The previous prime is 2867831. The next prime is 2867857. The reversal of 2867856 is 6587682.

It is a d-powerful number, because it can be written as 2²¹ + 8² + 6 + 7⁶ + 8⁶ + 5⁸ + 6³ .

It is not an unprimeable number, because it can be changed into a prime (2867857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29826 + ... + 29921.

2^2867856 is an apocalyptic number.

It is an amenable number.

2867856 is an abundant number, since it is smaller than the sum of its proper divisors (4540896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2867856 is a wasteful number, since it uses less digits than its factorization.

2867856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59758 (or 59752 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 2867856 is about 1693.4745347953. The cubic root of 2867856 is about 142.0754739955.

The spelling of 2867856 in words is "two million, eight hundred sixty-seven thousand, eight hundred fifty-six".