20039018 has 8 divisors (see below), whose sum is σ = 30078048. Its totient is φ = 10013004.

The previous prime is 20038987. The next prime is 20039069. The reversal of 20039018 is 81093002.

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

It is a junction number, because it is equal to n+sod(n) for n = 20038984 and 20039002.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3005 + ... + 7007.

It is an arithmetic number, because the mean of its divisors is an integer number (3759756).

Almost surely, 2^20039018 is an apocalyptic number.

20039018 is a deficient number, since it is larger than the sum of its proper divisors (10039030).

20039018 is a wasteful number, since it uses less digits than its factorization.

20039018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6508.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 20039018 is about 4476.4961744650. The cubic root of 20039018 is about 271.6181655713.

The spelling of 20039018 in words is "twenty million, thirty-nine thousand, eighteen".