2875840 has 112 divisors (see below), whose sum is σ = 8046720. Its totient is φ = 967680.

The previous prime is 2875823. The next prime is 2875861. The reversal of 2875840 is 485782.

It is a junction number, because it is equal to n+sod(n) for n = 2875796 and 2875805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66859 + ... + 66901.

2^2875840 is an apocalyptic number.

2875840 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 2875840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4023360).

2875840 is an abundant number, since it is smaller than the sum of its proper divisors (5170880).

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

2875840 is a wasteful number, since it uses less digits than its factorization.

2875840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90 (or 80 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 2875840 is about 1695.8301801772. The cubic root of 2875840 is about 142.2071960398.

The spelling of 2875840 in words is "two million, eight hundred seventy-five thousand, eight hundred forty".