2209290 has 16 divisors (see below), whose sum is σ = 5302368. Its totient is φ = 589136.

The previous prime is 2209289. The next prime is 2209313. The reversal of 2209290 is 929022.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2209290.

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, 36792 + ... + 36851.

It is an arithmetic number, because the mean of its divisors is an integer number (331398).

2^2209290 is an apocalyptic number.

2209290 is an abundant number, since it is smaller than the sum of its proper divisors (3093078).

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

2209290 is a wasteful number, since it uses less digits than its factorization.

2209290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73653.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 2209290 is about 1486.3680567074. The cubic root of 2209290 is about 130.2419557048.

The spelling of 2209290 in words is "two million, two hundred nine thousand, two hundred ninety".