2205730 has 8 divisors (see below), whose sum is σ = 3970332. Its totient is φ = 882288.

The previous prime is 2205719. The next prime is 2205761. The reversal of 2205730 is 375022.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1923769 + 281961 = 1387^2 + 531^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 2205698 and 2205707.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110277 + ... + 110296.

2^2205730 is an apocalyptic number.

2205730 is a deficient number, since it is larger than the sum of its proper divisors (1764602).

2205730 is a wasteful number, since it uses less digits than its factorization.

2205730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220580.

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 2205730 is about 1485.1700239367. The cubic root of 2205730 is about 130.1719617807.

The spelling of 2205730 in words is "two million, two hundred five thousand, seven hundred thirty".