2900840 has 32 divisors (see below), whose sum is σ = 6670080. Its totient is φ = 1134912.

The previous prime is 2900839. The next prime is 2900851. The reversal of 2900840 is 480092.

It is a zygodrome in base 7.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1109 + ... + 2651.

It is an arithmetic number, because the mean of its divisors is an integer number (208440).

2^2900840 is an apocalyptic number.

2900840 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 2900840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3335040).

2900840 is an abundant number, since it is smaller than the sum of its proper divisors (3769240).

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

2900840 is a wasteful number, since it uses less digits than its factorization.

2900840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601 (or 1597 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 2900840 is about 1703.1852512278. The cubic root of 2900840 is about 142.6180820775.

The spelling of 2900840 in words is "two million, nine hundred thousand, eight hundred forty".