216134274 has 16 divisors (see below), whose sum is σ = 447174720. Its totient is φ = 69560400.

The previous prime is 216134257. The next prime is 216134299. The reversal of 216134274 is 472431612.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 620902 + ... + 621249.

It is an arithmetic number, because the mean of its divisors is an integer number (27948420).

Almost surely, 2^216134274 is an apocalyptic number.

216134274 is an abundant number, since it is smaller than the sum of its proper divisors (231040446).

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

216134274 is a wasteful number, since it uses less digits than its factorization.

216134274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242185.

The product of its digits is 8064, while the sum is 30.

The square root of 216134274 is about 14701.5058412395. The cubic root of 216134274 is about 600.1243020243.

Adding to 216134274 its reverse (472431612), we get a palindrome (688565886).

The spelling of 216134274 in words is "two hundred sixteen million, one hundred thirty-four thousand, two hundred seventy-four".