20334216 has 48 divisors (see below), whose sum is σ = 59138640. Its totient is φ = 5809440.

The previous prime is 20334163. The next prime is 20334217. The reversal of 20334216 is 61243302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 20334192 and 20334201.

It is not an unprimeable number, because it can be changed into a prime (20334217) 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, 7470 + ... + 9821.

It is an arithmetic number, because the mean of its divisors is an integer number (1232055).

Almost surely, 2^20334216 is an apocalyptic number.

It is an amenable number.

20334216 is an abundant number, since it is smaller than the sum of its proper divisors (38804424).

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

20334216 is a wasteful number, since it uses less digits than its factorization.

20334216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17314 (or 17303 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 20334216 is about 4509.3476246570. The cubic root of 20334216 is about 272.9454197264.

Adding to 20334216 its reverse (61243302), we get a palindrome (81577518).

The spelling of 20334216 in words is "twenty million, three hundred thirty-four thousand, two hundred sixteen".