20443011 has 8 divisors (see below), whose sum is σ = 27331920. Its totient is φ = 13591392.

The previous prime is 20443009. The next prime is 20443019. The reversal of 20443011 is 11034402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20443011 - 2¹ = 20443009 is a prime.

It is a super-2 number, since 2×20443011² = 835833397492242, which contains 22 as substring.

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, 8016 + ... + 10253.

It is an arithmetic number, because the mean of its divisors is an integer number (3416490).

Almost surely, 2^20443011 is an apocalyptic number.

20443011 is a deficient number, since it is larger than the sum of its proper divisors (6888909).

20443011 is a wasteful number, since it uses less digits than its factorization.

20443011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18645.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 20443011 is about 4521.3948069152. The cubic root of 20443011 is about 273.4313378813.

Adding to 20443011 its reverse (11034402), we get a palindrome (31477413).

The spelling of 20443011 in words is "twenty million, four hundred forty-three thousand, eleven".