2840866 has 16 divisors (see below), whose sum is σ = 4910400. Its totient is φ = 1207440.

The previous prime is 2840857. The next prime is 2840911. The reversal of 2840866 is 6680482.

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, 1060 + ... + 2608.

It is an arithmetic number, because the mean of its divisors is an integer number (306900).

2^2840866 is an apocalyptic number.

2840866 is a deficient number, since it is larger than the sum of its proper divisors (2069534).

2840866 is a wasteful number, since it uses less digits than its factorization.

2840866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1689.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 2840866 is about 1685.4868732802. The cubic root of 2840866 is about 141.6283676554.

The spelling of 2840866 in words is "two million, eight hundred forty thousand, eight hundred sixty-six".