2900856 has 64 divisors (see below), whose sum is σ = 8570880. Its totient is φ = 800640.

The previous prime is 2900851. The next prime is 2900857. The reversal of 2900856 is 6580092.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2900851) 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, 4930 + ... + 5486.

It is an arithmetic number, because the mean of its divisors is an integer number (133920).

2^2900856 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 2900856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4285440).

2900856 is an abundant number, since it is smaller than the sum of its proper divisors (5670024).

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

2900856 is a wasteful number, since it uses less digits than its factorization.

2900856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604 (or 600 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 2900856 is about 1703.1899483029. The cubic root of 2900856 is about 142.6183442872.

The spelling of 2900856 in words is "two million, nine hundred thousand, eight hundred fifty-six".