20630000 has 50 divisors (see below), whose sum is σ = 49971504. Its totient is φ = 8248000.

The previous prime is 20629997. The next prime is 20630003. The reversal of 20630000 is 3602.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20629997) and next prime (20630003).

It is a tau number, because it is divible by the number of its divisors (50).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20630003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 8969 + ... + 11031.

Almost surely, 2^20630000 is an apocalyptic number.

20630000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20630000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24985752).

20630000 is an abundant number, since it is smaller than the sum of its proper divisors (29341504).

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

20630000 is an equidigital number, since it uses as much as digits as its factorization.

20630000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2091 (or 2070 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 20630000 is about 4542.0259796703. The cubic root of 20630000 is about 274.2624866657.

Adding to 20630000 its reverse (3602), we get a palindrome (20633602).

The spelling of 20630000 in words is "twenty million, six hundred thirty thousand".