2839890 has 32 divisors (see below), whose sum is σ = 6866496. Its totient is φ = 751680.

The previous prime is 2839871. The next prime is 2839913. The reversal of 2839890 is 989382.

2839890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 5169 + ... + 5691.

It is an arithmetic number, because the mean of its divisors is an integer number (214578).

2^2839890 is an apocalyptic number.

2839890 is an abundant number, since it is smaller than the sum of its proper divisors (4026606).

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

2839890 is a wasteful number, since it uses less digits than its factorization.

2839890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 2839890 is about 1685.1973178236. The cubic root of 2839890 is about 141.6121466487.

The spelling of 2839890 in words is "two million, eight hundred thirty-nine thousand, eight hundred ninety".