20443012 has 24 divisors (see below), whose sum is σ = 38877440. Its totient is φ = 9370080.

The previous prime is 20443009. The next prime is 20443019. The reversal of 20443012 is 21034402.

It is not an unprimeable number, because it can be changed into a prime (20443019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1983 + ... + 6694.

Almost surely, 2^20443012 is an apocalyptic number.

It is an amenable number.

20443012 is a deficient number, since it is larger than the sum of its proper divisors (18434428).

20443012 is a wasteful number, since it uses less digits than its factorization.

20443012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8731 (or 8729 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 20443012 is about 4521.3949175006. The cubic root of 20443012 is about 273.4313423397.

Adding to 20443012 its reverse (21034402), we get a palindrome (41477414).

The spelling of 20443012 in words is "twenty million, four hundred forty-three thousand, twelve".