20130215 has 16 divisors (see below), whose sum is σ = 29061120. Its totient is φ = 13076640.

The previous prime is 20130203. The next prime is 20130223. The reversal of 20130215 is 51203102.

It is a happy number.

It is not a de Polignac number, because 20130215 - 2²⁰ = 19081639 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20130215.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 14471 + ... + 15800.

It is an arithmetic number, because the mean of its divisors is an integer number (1816320).

Almost surely, 2^20130215 is an apocalyptic number.

20130215 is a deficient number, since it is larger than the sum of its proper divisors (8930905).

20130215 is a wasteful number, since it uses less digits than its factorization.

20130215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30302.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 20130215 is about 4486.6708147579. The cubic root of 20130215 is about 272.0295842605.

Adding to 20130215 its reverse (51203102), we get a palindrome (71333317).

The spelling of 20130215 in words is "twenty million, one hundred thirty thousand, two hundred fifteen".