20443064 has 16 divisors (see below), whose sum is σ = 38554920. Its totient is φ = 10161760.

The previous prime is 20443039. The next prime is 20443081. The reversal of 20443064 is 46034402.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6002 + ... + 8769.

Almost surely, 2^20443064 is an apocalyptic number.

It is an amenable number.

20443064 is a deficient number, since it is larger than the sum of its proper divisors (18111856).

20443064 is a wasteful number, since it uses less digits than its factorization.

20443064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14950 (or 14946 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 20443064 is about 4521.4006679347. The cubic root of 20443064 is about 273.4315741780.

Adding to 20443064 its reverse (46034402), we get a palindrome (66477466).

The spelling of 20443064 in words is "twenty million, four hundred forty-three thousand, sixty-four".