2012636020 has 12 divisors (see below), whose sum is σ = 4226535684. Its totient is φ = 805054400.

The previous prime is 2012635997. The next prime is 2012636023. The reversal of 2012636020 is 206362102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1252310544 + 760325476 = 35388^2 + 27574^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2012635982 and 2012636000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012636023) 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, 50315881 + ... + 50315920.

It is an arithmetic number, because the mean of its divisors is an integer number (352211307).

Almost surely, 2^2012636020 is an apocalyptic number.

2012636020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2012636020 is an abundant number, since it is smaller than the sum of its proper divisors (2213899664).

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

2012636020 is a wasteful number, since it uses less digits than its factorization.

2012636020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100631810 (or 100631808 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 2012636020 is about 44862.4121063502. The cubic root of 2012636020 is about 1262.5688792927.

Adding to 2012636020 its reverse (206362102), we get a palindrome (2218998122).

The spelling of 2012636020 in words is "two billion, twelve million, six hundred thirty-six thousand, twenty".