216935334 has 288 divisors, whose sum is σ = 669247488. Its totient is φ = 51321600.

The previous prime is 216935311. The next prime is 216935339. The reversal of 216935334 is 433539612.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216935339) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 6997899 + ... + 6997929.

It is an arithmetic number, because the mean of its divisors is an integer number (2323776).

Almost surely, 2^216935334 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216935334, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (334623744).

216935334 is an abundant number, since it is smaller than the sum of its proper divisors (452312154).

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

216935334 is a wasteful number, since it uses less digits than its factorization.

216935334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94 (or 71 counting only the distinct ones).

The product of its digits is 58320, while the sum is 36.

The square root of 216935334 is about 14728.7247920518. The cubic root of 216935334 is about 600.8648029276.

The spelling of 216935334 in words is "two hundred sixteen million, nine hundred thirty-five thousand, three hundred thirty-four".