20044018 has 4 divisors (see below), whose sum is σ = 30066030. Its totient is φ = 10022008.

The previous prime is 20044009. The next prime is 20044027. The reversal of 20044018 is 81044002.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (20044009) and next prime (20044027).

It can be written as a sum of positive squares in only one way, i.e., 12552849 + 7491169 = 3543^2 + 2737^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20043986 and 20044004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5011003 + ... + 5011006.

Almost surely, 2^20044018 is an apocalyptic number.

20044018 is a deficient number, since it is larger than the sum of its proper divisors (10022012).

20044018 is a wasteful number, since it uses less digits than its factorization.

20044018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10022011.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 20044018 is about 4477.0546121306. The cubic root of 20044018 is about 271.6407544675.

The spelling of 20044018 in words is "twenty million, forty-four thousand, eighteen".