2863820 has 24 divisors (see below), whose sum is σ = 6368544. Its totient is φ = 1078016.

The previous prime is 2863793. The next prime is 2863823. The reversal of 2863820 is 283682.

It is not an unprimeable number, because it can be changed into a prime (2863823) 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, 3872 + ... + 4551.

It is an arithmetic number, because the mean of its divisors is an integer number (265356).

2^2863820 is an apocalyptic number.

2863820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2863820 is an abundant number, since it is smaller than the sum of its proper divisors (3504724).

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

2863820 is a wasteful number, since it uses less digits than its factorization.

2863820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8449 (or 8447 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 2863820 is about 1692.2824823297. The cubic root of 2863820 is about 142.0087940067.

The spelling of 2863820 in words is "two million, eight hundred sixty-three thousand, eight hundred twenty".