33330216 has 32 divisors (see below), whose sum is σ = 84900960. Its totient is φ = 10900032.

The previous prime is 33330133. The next prime is 33330247. The reversal of 33330216 is 61203333.

It is a super-2 number, since 2×33330216² = 2221806597213312, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33330192 and 33330201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11830 + ... + 14373.

It is an arithmetic number, because the mean of its divisors is an integer number (2653155).

Almost surely, 2^33330216 is an apocalyptic number.

It is an amenable number.

33330216 is an abundant number, since it is smaller than the sum of its proper divisors (51570744).

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

33330216 is a wasteful number, since it uses less digits than its factorization.

33330216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26265 (or 26261 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 21.

The square root of 33330216 is about 5773.2327165982. The cubic root of 33330216 is about 321.8197620483.

Adding to 33330216 its reverse (61203333), we get a palindrome (94533549).

The spelling of 33330216 in words is "thirty-three million, three hundred thirty thousand, two hundred sixteen".