216182970 has 48 divisors (see below), whose sum is σ = 567258120. Its totient is φ = 57117312.

The previous prime is 216182951. The next prime is 216182983. The reversal of 216182970 is 79281612.

216182970 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 149744169 + 66438801 = 12237^2 + 8151^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1209 + ... + 20828.

Almost surely, 2^216182970 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216182970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283629060).

216182970 is an abundant number, since it is smaller than the sum of its proper divisors (351075150).

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

216182970 is a wasteful number, since it uses less digits than its factorization.

216182970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22159 (or 22156 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 216182970 is about 14703.1619048421. The cubic root of 216182970 is about 600.1693688525.

The spelling of 216182970 in words is "two hundred sixteen million, one hundred eighty-two thousand, nine hundred seventy".