20630210 has 8 divisors (see below), whose sum is σ = 37134396. Its totient is φ = 8252080.

The previous prime is 20630209. The next prime is 20630213. The reversal of 20630210 is 1203602.

It can be written as a sum of positive squares in 2 ways, for example, as 20421361 + 208849 = 4519^2 + 457^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20630213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1031501 + ... + 1031520.

Almost surely, 2^20630210 is an apocalyptic number.

20630210 is a deficient number, since it is larger than the sum of its proper divisors (16504186).

20630210 is a wasteful number, since it uses less digits than its factorization.

20630210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2063028.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 20630210 is about 4542.0490970486. The cubic root of 20630210 is about 274.2634172672.

Adding to 20630210 its reverse (1203602), we get a palindrome (21833812).

The spelling of 20630210 in words is "twenty million, six hundred thirty thousand, two hundred ten".