It is a tau number, because it is divible by the number of its divisors (96).
It is an unprimeable number.
22871840 is an apocalyptic number.
2871840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 2871840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4693248).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2871840 is a wasteful number, since it uses less digits than its factorization.
2871840 is an odious number, because the sum of its binary digits is odd.
The square root of 2871840 is about 1694.6504064261. The cubic root of 2871840 is about 142.1412335482.
The spelling of 2871840 in words is "two million, eight hundred seventy-one thousand, eight hundred forty".