20650230 has 48 divisors (see below), whose sum is σ = 54007200. Its totient is φ = 5474304.

The previous prime is 20650229. The next prime is 20650237. The reversal of 20650230 is 3205602.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20650237) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17334 + ... + 18486.

It is an arithmetic number, because the mean of its divisors is an integer number (1125150).

Almost surely, 2^20650230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20650230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27003600).

20650230 is an abundant number, since it is smaller than the sum of its proper divisors (33356970).

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

20650230 is a wasteful number, since it uses less digits than its factorization.

20650230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365 (or 1362 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 20650230 is about 4544.2524137640. The cubic root of 20650230 is about 274.3521056269.

Adding to 20650230 its reverse (3205602), we get a palindrome (23855832).

The spelling of 20650230 in words is "twenty million, six hundred fifty thousand, two hundred thirty".