20047012 has 12 divisors (see below), whose sum is σ = 37146060. Its totient is φ = 9433856.

The previous prime is 20047009. The next prime is 20047019. The reversal of 20047012 is 21074002.

It can be written as a sum of positive squares in 2 ways, for example, as 14258176 + 5788836 = 3776^2 + 2406^2 .

It is not an unprimeable number, because it can be changed into a prime (20047019) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 147337 + ... + 147472.

It is an arithmetic number, because the mean of its divisors is an integer number (3095505).

Almost surely, 2^20047012 is an apocalyptic number.

It is an amenable number.

20047012 is a deficient number, since it is larger than the sum of its proper divisors (17099048).

20047012 is a wasteful number, since it uses less digits than its factorization.

20047012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294830 (or 294828 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 20047012 is about 4477.3889712644. The cubic root of 20047012 is about 271.6542789003.

The spelling of 20047012 in words is "twenty million, forty-seven thousand, twelve".