216203434 has 8 divisors (see below), whose sum is σ = 324480420. Its totient is φ = 108043296.

The previous prime is 216203423. The next prime is 216203453. The reversal of 216203434 is 434302612.

It can be written as a sum of positive squares in 2 ways, for example, as 204404209 + 11799225 = 14297^2 + 3435^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 216203399 and 216203408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24429 + ... + 32080.

Almost surely, 2^216203434 is an apocalyptic number.

216203434 is a deficient number, since it is larger than the sum of its proper divisors (108276986).

216203434 is a wasteful number, since it uses less digits than its factorization.

216203434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58424.

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

The square root of 216203434 is about 14703.8577931099. The cubic root of 216203434 is about 600.1883057102.

The spelling of 216203434 in words is "two hundred sixteen million, two hundred three thousand, four hundred thirty-four".