217232830 has 8 divisors (see below), whose sum is σ = 391019112. Its totient is φ = 86893128.

The previous prime is 217232819. The next prime is 217232831. The reversal of 217232830 is 38232712.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217232831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10861632 + ... + 10861651.

It is an arithmetic number, because the mean of its divisors is an integer number (48877389).

Almost surely, 2^217232830 is an apocalyptic number.

217232830 is a deficient number, since it is larger than the sum of its proper divisors (173786282).

217232830 is a wasteful number, since it uses less digits than its factorization.

217232830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21723290.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 217232830 is about 14738.8205091181. The cubic root of 217232830 is about 601.1393443805.

The spelling of 217232830 in words is "two hundred seventeen million, two hundred thirty-two thousand, eight hundred thirty".