2873856 has 40 divisors (see below), whose sum is σ = 7660224. Its totient is φ = 957440.

The previous prime is 2873851. The next prime is 2873863. The reversal of 2873856 is 6583782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2873851) 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, 601 + ... + 2471.

2^2873856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2873856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3830112).

2873856 is an abundant number, since it is smaller than the sum of its proper divisors (4786368).

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

2873856 is an equidigital number, since it uses as much as digits as its factorization.

2873856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1892 (or 1876 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 2873856 is about 1695.2451150202. The cubic root of 2873856 is about 142.1744862944.

The spelling of 2873856 in words is "two million, eight hundred seventy-three thousand, eight hundred fifty-six".