2800842 has 16 divisors (see below), whose sum is σ = 6111072. Its totient is φ = 848720.

The previous prime is 2800823. The next prime is 2800843. The reversal of 2800842 is 2480082.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2800843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21153 + ... + 21284.

It is an arithmetic number, because the mean of its divisors is an integer number (381942).

2^2800842 is an apocalyptic number.

2800842 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2800842 is an abundant number, since it is smaller than the sum of its proper divisors (3310230).

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

2800842 is a wasteful number, since it uses less digits than its factorization.

2800842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42453.

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 2800842 is about 1673.5716297787. The cubic root of 2800842 is about 140.9601013814.

The spelling of 2800842 in words is "two million, eight hundred thousand, eight hundred forty-two".