20635012 has 12 divisors (see below), whose sum is σ = 36951376. Its totient is φ = 10077480.

The previous prime is 20635009. The next prime is 20635031. The reversal of 20635012 is 21053602.

It is a happy 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 3 ways as a sum of consecutive naturals, for example, 59814 + ... + 60157.

Almost surely, 2^20635012 is an apocalyptic number.

It is an amenable number.

20635012 is a deficient number, since it is larger than the sum of its proper divisors (16316364).

20635012 is a wasteful number, since it uses less digits than its factorization.

20635012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120018 (or 120016 counting only the distinct ones).

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

The square root of 20635012 is about 4542.5776823297. The cubic root of 20635012 is about 274.2846952984.

Adding to 20635012 its reverse (21053602), we get a palindrome (41688614).

The spelling of 20635012 in words is "twenty million, six hundred thirty-five thousand, twelve".