217230396 has 24 divisors (see below), whose sum is σ = 511892304. Its totient is φ = 71692800.

The previous prime is 217230383. The next prime is 217230443. The reversal of 217230396 is 693032712.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88405 + ... + 90828.

It is an arithmetic number, because the mean of its divisors is an integer number (21328846).

Almost surely, 2^217230396 is an apocalyptic number.

It is an amenable number.

217230396 is an abundant number, since it is smaller than the sum of its proper divisors (294661908).

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

217230396 is a wasteful number, since it uses less digits than its factorization.

217230396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179341 (or 179339 counting only the distinct ones).

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

The square root of 217230396 is about 14738.7379378290. The cubic root of 217230396 is about 601.1370992032.

The spelling of 217230396 in words is "two hundred seventeen million, two hundred thirty thousand, three hundred ninety-six".