2856880 has 80 divisors (see below), whose sum is σ = 7437024. Its totient is φ = 1013760.

The previous prime is 2856871. The next prime is 2856883. The reversal of 2856880 is 886582.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2856883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42607 + ... + 42673.

2^2856880 is an apocalyptic number.

2856880 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 2856880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3718512).

2856880 is an abundant number, since it is smaller than the sum of its proper divisors (4580144).

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

2856880 is a wasteful number, since it uses less digits than its factorization.

2856880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 2856880 is about 1690.2307534772. The cubic root of 2856880 is about 141.8939895145.

The spelling of 2856880 in words is "two million, eight hundred fifty-six thousand, eight hundred eighty".