216264930 has 64 divisors (see below), whose sum is σ = 605318400. Its totient is φ = 49429632.

The previous prime is 216264901. The next prime is 216264941. The reversal of 216264930 is 39462612.

It is a junction number, because it is equal to n+sod(n) for n = 216264891 and 216264900.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 219 + ... + 20798.

It is an arithmetic number, because the mean of its divisors is an integer number (9458100).

Almost surely, 2^216264930 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216264930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302659200).

216264930 is an abundant number, since it is smaller than the sum of its proper divisors (389053470).

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

216264930 is a wasteful number, since it uses less digits than its factorization.

216264930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21048 (or 21034 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 216264930 is about 14705.9487963205. The cubic root of 216264930 is about 600.2452053325.

The spelling of 216264930 in words is "two hundred sixteen million, two hundred sixty-four thousand, nine hundred thirty".