20320012 has 6 divisors (see below), whose sum is σ = 35560028. Its totient is φ = 10160004.

The previous prime is 20320007. The next prime is 20320021. The reversal of 20320012 is 21002302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2539998 + ... + 2540005.

Almost surely, 2^20320012 is an apocalyptic number.

It is an amenable number.

20320012 is a deficient number, since it is larger than the sum of its proper divisors (15240016).

20320012 is a wasteful number, since it uses less digits than its factorization.

20320012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5080007 (or 5080005 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 20320012 is about 4507.7723988684. The cubic root of 20320012 is about 272.8818516694.

Adding to 20320012 its reverse (21002302), we get a palindrome (41322314).

The spelling of 20320012 in words is "twenty million, three hundred twenty thousand, twelve".