2289806 has 4 divisors (see below), whose sum is σ = 3434712. Its totient is φ = 1144902.

The previous prime is 2289803. The next prime is 2289817. The reversal of 2289806 is 6089822.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2289803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572450 + ... + 572453.

It is an arithmetic number, because the mean of its divisors is an integer number (858678).

2^2289806 is an apocalyptic number.

2289806 is a deficient number, since it is larger than the sum of its proper divisors (1144906).

2289806 is a wasteful number, since it uses less digits than its factorization.

2289806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144905.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 2289806 is about 1513.2104942803. The cubic root of 2289806 is about 131.8053067957.

The spelling of 2289806 in words is "two million, two hundred eighty-nine thousand, eight hundred six".