20030115 has 16 divisors (see below), whose sum is σ = 36626688. Its totient is φ = 9156576.

The previous prime is 20030107. The next prime is 20030117. The reversal of 20030115 is 51103002.

It is not a de Polignac number, because 20030115 - 2³ = 20030107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20030115.

It is not an unprimeable number, because it can be changed into a prime (20030117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95277 + ... + 95486.

It is an arithmetic number, because the mean of its divisors is an integer number (2289168).

Almost surely, 2^20030115 is an apocalyptic number.

20030115 is a deficient number, since it is larger than the sum of its proper divisors (16596573).

20030115 is a wasteful number, since it uses less digits than its factorization.

20030115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190778.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 20030115 is about 4475.5016478603. The cubic root of 20030115 is about 271.5779344791.

Adding to 20030115 its reverse (51103002), we get a palindrome (71133117).

The spelling of 20030115 in words is "twenty million, thirty thousand, one hundred fifteen".