2863890 has 32 divisors (see below), whose sum is σ = 7637760. Its totient is φ = 763632.

The previous prime is 2863879. The next prime is 2863897. The reversal of 2863890 is 983682.

2863890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2863897) by changing a digit.

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, 5034 + ... + 5573.

It is an arithmetic number, because the mean of its divisors is an integer number (238680).

2^2863890 is an apocalyptic number.

2863890 is an abundant number, since it is smaller than the sum of its proper divisors (4773870).

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

2863890 is a wasteful number, since it uses less digits than its factorization.

2863890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10623 (or 10617 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 2863890 is about 1692.3031643296. The cubic root of 2863890 is about 142.0099510318.

The spelling of 2863890 in words is "two million, eight hundred sixty-three thousand, eight hundred ninety".