216134634 has 64 divisors (see below), whose sum is σ = 481178880. Its totient is φ = 64373760.

The previous prime is 216134629. The next prime is 216134663. The reversal of 216134634 is 436431612.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 424372 + ... + 424880.

It is an arithmetic number, because the mean of its divisors is an integer number (7518420).

Almost surely, 2^216134634 is an apocalyptic number.

216134634 is an abundant number, since it is smaller than the sum of its proper divisors (265044246).

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

216134634 is a wasteful number, since it uses less digits than its factorization.

216134634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735.

The product of its digits is 10368, while the sum is 30.

The square root of 216134634 is about 14701.5180848782. The cubic root of 216134634 is about 600.1246352194.

The spelling of 216134634 in words is "two hundred sixteen million, one hundred thirty-four thousand, six hundred thirty-four".