30636216 has 96 divisors (see below), whose sum is σ = 90810720. Its totient is φ = 9273600.

The previous prime is 30636197. The next prime is 30636223. The reversal of 30636216 is 61263603.

30636216 is a `hidden beast` number, since 3 + 0 + 636 + 21 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 30636216.

It is a congruent number.

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, 66226 + ... + 66686.

It is an arithmetic number, because the mean of its divisors is an integer number (945945).

Almost surely, 2^30636216 is an apocalyptic number.

30636216 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30636216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45405360).

30636216 is an abundant number, since it is smaller than the sum of its proper divisors (60174504).

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

30636216 is a wasteful number, since it uses less digits than its factorization.

30636216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557 (or 550 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 30636216 is about 5534.9991869918. Note that the first 3 decimals coincide. The cubic root of 30636216 is about 312.9044269917.

Adding to 30636216 its reverse (61263603), we get a palindrome (91899819).

The spelling of 30636216 in words is "thirty million, six hundred thirty-six thousand, two hundred sixteen".