2842820 has 24 divisors (see below), whose sum is σ = 6002304. Its totient is φ = 1130976.

The previous prime is 2842813. The next prime is 2842843. The reversal of 2842820 is 282482.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2842820.

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, 5909 + ... + 6371.

It is an arithmetic number, because the mean of its divisors is an integer number (250096).

2^2842820 is an apocalyptic number.

2842820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2842820 is an abundant number, since it is smaller than the sum of its proper divisors (3159484).

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

2842820 is a wasteful number, since it uses less digits than its factorization.

2842820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779 (or 777 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 26.

The square root of 2842820 is about 1686.0664281101. The cubic root of 2842820 is about 141.6608317474.

The spelling of 2842820 in words is "two million, eight hundred forty-two thousand, eight hundred twenty".