20130016 has 48 divisors (see below), whose sum is σ = 41383440. Its totient is φ = 9630720.

The previous prime is 20130001. The next prime is 20130029. The reversal of 20130016 is 61003102.

It is a junction number, because it is equal to n+sod(n) for n = 20129978 and 20130005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87790 + ... + 88018.

It is an arithmetic number, because the mean of its divisors is an integer number (862155).

Almost surely, 2^20130016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20130016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20691720).

20130016 is an abundant number, since it is smaller than the sum of its proper divisors (21253424).

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

20130016 is a wasteful number, since it uses less digits than its factorization.

20130016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347 (or 339 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 20130016 is about 4486.6486379034. The cubic root of 20130016 is about 272.0286878623.

Adding to 20130016 its reverse (61003102), we get a palindrome (81133118).

The spelling of 20130016 in words is "twenty million, one hundred thirty thousand, sixteen".