218096730 has 48 divisors (see below), whose sum is σ = 569976264. Its totient is φ = 57859200.

The previous prime is 218096729. The next prime is 218096737. The reversal of 218096730 is 37690812.

It can be written as a sum of positive squares in 4 ways, for example, as 207965241 + 10131489 = 14421^2 + 3183^2 .

It is not an unprimeable number, because it can be changed into a prime (218096737) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11580 + ... + 23880.

Almost surely, 2^218096730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 218096730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284988132).

218096730 is an abundant number, since it is smaller than the sum of its proper divisors (351879534).

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

218096730 is a wasteful number, since it uses less digits than its factorization.

218096730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12511 (or 12508 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 218096730 is about 14768.0983880796. The cubic root of 218096730 is about 601.9351684947.

The spelling of 218096730 in words is "two hundred eighteen million, ninety-six thousand, seven hundred thirty".