216843130 has 24 divisors (see below), whose sum is σ = 454043988. Its totient is φ = 74346048.

The previous prime is 216843073. The next prime is 216843139. The reversal of 216843130 is 31348612.

It can be written as a sum of positive squares in 2 ways, for example, as 209351961 + 7491169 = 14469^2 + 2737^2 .

It is not an unprimeable number, because it can be changed into a prime (216843139) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 220779 + ... + 221758.

Almost surely, 2^216843130 is an apocalyptic number.

216843130 is an abundant number, since it is smaller than the sum of its proper divisors (237200858).

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

216843130 is a wasteful number, since it uses less digits than its factorization.

216843130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442558 (or 442551 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 216843130 is about 14725.5943852871. The cubic root of 216843130 is about 600.7796623648.

The spelling of 216843130 in words is "two hundred sixteen million, eight hundred forty-three thousand, one hundred thirty".