20536012 has 48 divisors (see below), whose sum is σ = 43223040. Its totient is φ = 8352000.

The previous prime is 20535947. The next prime is 20536013. The reversal of 20536012 is 21063502.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20536013) 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 15 ways as a sum of consecutive naturals, for example, 51012 + ... + 51412.

It is an arithmetic number, because the mean of its divisors is an integer number (900480).

Almost surely, 2^20536012 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 20536012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21611520).

20536012 is an abundant number, since it is smaller than the sum of its proper divisors (22687028).

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

20536012 is a wasteful number, since it uses less digits than its factorization.

20536012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502 (or 500 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 20536012 is about 4531.6676841975. The cubic root of 20536012 is about 273.8453493530.

Adding to 20536012 its reverse (21063502), we get a palindrome (41599514).

The spelling of 20536012 in words is "twenty million, five hundred thirty-six thousand, twelve".