20630115 has 48 divisors (see below), whose sum is σ = 39626496. Its totient is φ = 9844800.

The previous prime is 20630089. The next prime is 20630119. The reversal of 20630115 is 51103602.

20630115 is a `hidden beast` number, since 20 + 630 + 1 + 15 = 666.

It is not a de Polignac number, because 20630115 - 2⁵ = 20630083 is a prime.

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 47 ways as a sum of consecutive naturals, for example, 34852 + ... + 35438.

It is an arithmetic number, because the mean of its divisors is an integer number (825552).

Almost surely, 2^20630115 is an apocalyptic number.

20630115 is a deficient number, since it is larger than the sum of its proper divisors (18996381).

20630115 is a wasteful number, since it uses less digits than its factorization.

20630115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680 (or 677 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 20630115 is about 4542.0386392016. The cubic root of 20630115 is about 274.2629962815.

Adding to 20630115 its reverse (51103602), we get a palindrome (71733717).

The spelling of 20630115 in words is "twenty million, six hundred thirty thousand, one hundred fifteen".