216342430 has 16 divisors (see below), whose sum is σ = 389694240. Its totient is φ = 86475232.

The previous prime is 216342419. The next prime is 216342431. The reversal of 216342430 is 34243612.

It is a junction number, because it is equal to n+sod(n) for n = 216342395 and 216342404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216342431) 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 7 ways as a sum of consecutive naturals, for example, 8652 + ... + 22528.

It is an arithmetic number, because the mean of its divisors is an integer number (24355890).

Almost surely, 2^216342430 is an apocalyptic number.

216342430 is a deficient number, since it is larger than the sum of its proper divisors (173351810).

216342430 is a wasteful number, since it uses less digits than its factorization.

216342430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15443.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 216342430 is about 14708.5835483911. The cubic root of 216342430 is about 600.3168974121.

The spelling of 216342430 in words is "two hundred sixteen million, three hundred forty-two thousand, four hundred thirty".