2805420 has 24 divisors (see below), whose sum is σ = 7855344. Its totient is φ = 748096.

The previous prime is 2805403. The next prime is 2805443. The reversal of 2805420 is 245082.

2805420 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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, 23319 + ... + 23438.

It is an arithmetic number, because the mean of its divisors is an integer number (327306).

2^2805420 is an apocalyptic number.

2805420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2805420 is an abundant number, since it is smaller than the sum of its proper divisors (5049924).

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

2805420 is a wasteful number, since it uses less digits than its factorization.

2805420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46769 (or 46767 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 2805420 is about 1674.9388048523. The cubic root of 2805420 is about 141.0368597362.

The spelling of 2805420 in words is "two million, eight hundred five thousand, four hundred twenty".