20650212 has 36 divisors (see below), whose sum is σ = 56945616. Its totient is φ = 6257520.

The previous prime is 20650193. The next prime is 20650213. The reversal of 20650212 is 21205602.

20650212 is a `hidden beast` number, since 2 + 0 + 650 + 2 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20650213) 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, 25678 + ... + 26469.

Almost surely, 2^20650212 is an apocalyptic number.

20650212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20650212 is an abundant number, since it is smaller than the sum of its proper divisors (36295404).

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

20650212 is a wasteful number, since it uses less digits than its factorization.

20650212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52168 (or 52163 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 20650212 is about 4544.2504332398. The cubic root of 20650212 is about 274.3520259128.

Adding to 20650212 its reverse (21205602), we get a palindrome (41855814).

The spelling of 20650212 in words is "twenty million, six hundred fifty thousand, two hundred twelve".