2223290 has 8 divisors (see below), whose sum is σ = 4001940. Its totient is φ = 889312.

The previous prime is 2223283. The next prime is 2223317. The reversal of 2223290 is 923222.

It can be written as a sum of positive squares in 2 ways, for example, as 2193361 + 29929 = 1481^2 + 173^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111155 + ... + 111174.

2^2223290 is an apocalyptic number.

2223290 is a deficient number, since it is larger than the sum of its proper divisors (1778650).

2223290 is a wasteful number, since it uses less digits than its factorization.

2223290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222336.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 2223290 is about 1491.0700855426. The cubic root of 2223290 is about 130.5164857356.

It can be divided in two parts, 22232 and 90, that added together give a palindrome (22322).

The spelling of 2223290 in words is "two million, two hundred twenty-three thousand, two hundred ninety".