216338434 has 32 divisors (see below), whose sum is σ = 362880000. Its totient is φ = 96043584.

The previous prime is 216338407. The next prime is 216338443. The reversal of 216338434 is 434833612.

It is a self number, because there is not a number n which added to its sum of digits gives 216338434.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 360867 + ... + 361465.

It is an arithmetic number, because the mean of its divisors is an integer number (11340000).

Almost surely, 2^216338434 is an apocalyptic number.

216338434 is a deficient number, since it is larger than the sum of its proper divisors (146541566).

216338434 is a wasteful number, since it uses less digits than its factorization.

216338434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122.

The product of its digits is 41472, while the sum is 34.

The square root of 216338434 is about 14708.4477087149. The cubic root of 216338434 is about 600.3132012946.

The spelling of 216338434 in words is "two hundred sixteen million, three hundred thirty-eight thousand, four hundred thirty-four".