217007230 has 32 divisors (see below), whose sum is σ = 427690368. Its totient is φ = 78621600.

The previous prime is 217007209. The next prime is 217007237. The reversal of 217007230 is 32700712.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217007237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27645 + ... + 34615.

It is an arithmetic number, because the mean of its divisors is an integer number (13365324).

Almost surely, 2^217007230 is an apocalyptic number.

217007230 is a deficient number, since it is larger than the sum of its proper divisors (210683138).

217007230 is a wasteful number, since it uses less digits than its factorization.

217007230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7272.

The product of its (nonzero) digits is 588, while the sum is 22.

The square root of 217007230 is about 14731.1652628025. The cubic root of 217007230 is about 600.9311744796.

Adding to 217007230 its reverse (32700712), we get a palindrome (249707942).

The spelling of 217007230 in words is "two hundred seventeen million, seven thousand, two hundred thirty".