2215730 has 16 divisors (see below), whose sum is σ = 4351104. Its totient is φ = 805680.

The previous prime is 2215699. The next prime is 2215777. The reversal of 2215730 is 375122.

2215730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 7.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9962 + ... + 10181.

It is an arithmetic number, because the mean of its divisors is an integer number (271944).

2^2215730 is an apocalyptic number.

2215730 is a deficient number, since it is larger than the sum of its proper divisors (2135374).

2215730 is a wasteful number, since it uses less digits than its factorization.

2215730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20161.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 2215730 is about 1488.5328347067. The cubic root of 2215730 is about 130.3683831286.

The spelling of 2215730 in words is "two million, two hundred fifteen thousand, seven hundred thirty".