216208134 has 24 divisors (see below), whose sum is σ = 471165552. Its totient is φ = 71651760.

The previous prime is 216208123. The next prime is 216208151. The reversal of 216208134 is 431802612.

216208134 is a `hidden beast` number, since 2 + 1 + 620 + 8 + 1 + 34 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 216208098 and 216208107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31602 + ... + 37829.

It is an arithmetic number, because the mean of its divisors is an integer number (19631898).

Almost surely, 2^216208134 is an apocalyptic number.

216208134 is an abundant number, since it is smaller than the sum of its proper divisors (254957418).

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

216208134 is a wasteful number, since it uses less digits than its factorization.

216208134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69612 (or 69609 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 216208134 is about 14704.0176142441. The cubic root of 216208134 is about 600.1926548003.

The spelling of 216208134 in words is "two hundred sixteen million, two hundred eight thousand, one hundred thirty-four".