20630118 has 8 divisors (see below), whose sum is σ = 41260248. Its totient is φ = 6876704.

The previous prime is 20630089. The next prime is 20630119. The reversal of 20630118 is 81103602.

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

20630118 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20630094 and 20630103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20630119) 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 3 ways as a sum of consecutive naturals, for example, 1719171 + ... + 1719182.

It is an arithmetic number, because the mean of its divisors is an integer number (5157531).

Almost surely, 2^20630118 is an apocalyptic number.

20630118 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20630118 is a wasteful number, since it uses less digits than its factorization.

20630118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3438358.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 20630118 is about 4542.0389694497. The cubic root of 20630118 is about 274.2630095758.

The spelling of 20630118 in words is "twenty million, six hundred thirty thousand, one hundred eighteen".