217963230 has 32 divisors (see below), whose sum is σ = 523590048. Its totient is φ = 58070400.

The previous prime is 217963183. The next prime is 217963237. The reversal of 217963230 is 32369712.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 217963191 and 217963200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217963237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38800 + ... + 44060.

It is an arithmetic number, because the mean of its divisors is an integer number (16362189).

Almost surely, 2^217963230 is an apocalyptic number.

217963230 is an abundant number, since it is smaller than the sum of its proper divisors (305626818).

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

217963230 is a wasteful number, since it uses less digits than its factorization.

217963230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6652.

The product of its (nonzero) digits is 13608, while the sum is 33.

The square root of 217963230 is about 14763.5778184016. The cubic root of 217963230 is about 601.8123258356.

The spelling of 217963230 in words is "two hundred seventeen million, nine hundred sixty-three thousand, two hundred thirty".