2840386 has 8 divisors (see below), whose sum is σ = 4484880. Its totient is φ = 1345428.

The previous prime is 2840359. The next prime is 2840393. The reversal of 2840386 is 6830482.

It is a happy number.

2840386 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37336 + ... + 37411.

It is an arithmetic number, because the mean of its divisors is an integer number (560610).

2^2840386 is an apocalyptic number.

2840386 is a deficient number, since it is larger than the sum of its proper divisors (1644494).

2840386 is a wasteful number, since it uses less digits than its factorization.

2840386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74768.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 2840386 is about 1685.3444751741. The cubic root of 2840386 is about 141.6203905755.

The spelling of 2840386 in words is "two million, eight hundred forty thousand, three hundred eighty-six".