20016012 has 12 divisors (see below), whose sum is σ = 46704056. Its totient is φ = 6672000.

The previous prime is 20015981. The next prime is 20016013. The reversal of 20016012 is 21061002.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 1668001 = 20016012 / (2 + 0 + 0 + 1 + 6 + 0 + 1 + 2).

It is not an unprimeable number, because it can be changed into a prime (20016013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 833989 + ... + 834012.

Almost surely, 2^20016012 is an apocalyptic number.

It is an amenable number.

20016012 is an abundant number, since it is smaller than the sum of its proper divisors (26688044).

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

20016012 is a wasteful number, since it uses less digits than its factorization.

20016012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1668008 (or 1668006 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 20016012 is about 4473.9257928580. The cubic root of 20016012 is about 271.5141810947.

Adding to 20016012 its reverse (21061002), we get a palindrome (41077014).

The spelling of 20016012 in words is "twenty million, sixteen thousand, twelve".