216134430 has 96 divisors (see below), whose sum is σ = 558877536. Its totient is φ = 53477376.

The previous prime is 216134417. The next prime is 216134459. The reversal of 216134430 is 34431612.

It is a self number, because there is not a number n which added to its sum of digits gives 216134430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 840862 + ... + 841118.

It is an arithmetic number, because the mean of its divisors is an integer number (5821641).

Almost surely, 2^216134430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216134430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279438768).

216134430 is an abundant number, since it is smaller than the sum of its proper divisors (342743106).

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

216134430 is a wasteful number, since it uses less digits than its factorization.

216134430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398 (or 381 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 216134430 is about 14701.5111468175. The cubic root of 216134430 is about 600.1244464089.

The spelling of 216134430 in words is "two hundred sixteen million, one hundred thirty-four thousand, four hundred thirty".